S-920.20210701_IMP

AAR Manual of Standards and Recommended Practices S-920 Sensors AAR COMPONENT IDENTIFICATION (CID) BAR CODE STANDARD Standard S-920 Adopted: 2012; Last Revised: 2021 Paragraph Topic Page or Appendix 1.0 Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]2 2.0 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]2 3.0 Bar Code Label Approval Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]3 4.0 General Label Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]4 5.0 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]4 6.0 Label Materials and Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]5 7.0 Bar Code Symbology and Coding—General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]6 8.0 AAR-Required 1D CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]7 9.0 AAR-Required 2D CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]7 IMPLEMENTED 07/2021 10.0 Wheel Set CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]8 11.0 Wheel Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]9 12.0 Axle Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]10 13.0 Bearing Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]12 14.0 Bolster CID Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]13 15.0 Side Frame CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]14 16.0 Coupler CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]15 17.0 Emergency Brake Valve Portion CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]16 18.0 Service Brake Valve Portion CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]18 19.0 Slack Adjuster CID Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]20 20.0 Cushioning Unit CID Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]21 21.0 Tank Car Service Equipment – Safety Relief Devices CID Labels . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]22 Appendix A Wheel Set Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]25 Appendix B Bolster Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]34 Appendix C Side Frame Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]36 Appendix D Coupler Body Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]38 Appendix E Emergency Brake Valve Portion Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]40 Appendix F Service Brake Valve Portion Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]41 Appendix G Slack Adjuster Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]42 Appendix H Cushioning Unit Data Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]43 Appendix I Tank Car Safety Relief Device Data Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F[S-920]45 04/2020 F [S-920] 1

AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021 1.0 PURPOSE AND SCOPE The purpose of this standard is to establish an industry standard for the AAR component identification (CID) bar code labels with reference to the applicable AAR data specifications herein and also for those portions maintained by Railinc and made available online. 1.1 This standard defines the method and content of bar code labels on components to be tracked within the AAR Component Registry. This will better support the management, administration, and maintenance of railroad equipment assets by providing traceability of component performance throughout the full life cycle. 1.2 This standard is applicable to all equipment and components as stipulated by the appropriate AAR committees that require an AAR CID or to those defined components that are part of an assembly requiring an AAR CID. The AAR CID acts as a standardized serial number for that particular unit. 1.3 The bar codes defined herein are required to be used for the purpose of communicating the required data elements from one company to another unless accomplished using another method, by agreement. These bar codes are not required to be applied and used as an internal communication method. For example, a reconditioned component need not have a bar code applied when being processed within a shop as long as the required data is captured and supplied to the subsequent customers using the required methods. 2.0 DEFINITIONS 2.1 Bar Code A pattern of information-encoding symbols (symbology) that is machine-readable in real time. • 1D linear bar code symbology is a single row of dark bars and light spaces, variable in width and height. • 2D (two dimensional) stacked symbology uses multiple rows of variable-width bars and spaces. • 2D matrix symbology encodes information in a two-dimensional pattern of data cells. • “Code” or “payload” refers to the actual data that the bar code contains, whereas “symbol” or “image” refers to the arrangement of the bars and spaces or data cells. Bar coding reduces errors in data capturing, speeds up data acquisition, and is part of an automatic identification technology designed to identify, track, document, and control material and processes. 2.2 AAR Component ID (CID) The combination of 1) the AAR Component ID Company Code element and 2) the AAR Component ID Number element makes up the complete AAR Component ID (CID). This unique CID is generally associated with or assigned to an equipment initial (mark), equipment number, and the AAR-defined location on said equipment using electronic means by all shops applying or modifying components on equipment governed by the AAR. This record and the associated detail are stored in a database at Railinc. The AAR CID is designed to be the single required item coded within a 1D bar code label on AAR-defined components of assemblies that are associated with equipment. The CID also may be found within 2D bar code labels for the purpose of identifying components that make up an AAR-defined assembly or in cases where additional detail is required to be communicated through the use of bar codes. F [S-920] 2 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 2.3 AAR Component ID Company Code IMPLEMENTED 07/2021 2.3.1 The company code assigned by AAR (Railinc) generally identifies the company adding, modifying, or deleting an associated record, but may also identify the company responsible for the record or portion of a record for which they do not directly control. This element also is used as part of the string that defines a standardized part number (e.g., ABCD0001, where ABCD is the company code and ABCD1234 might be a standardized replacement for any part number such as XX-12-ZA4). 2.3.2 Company codes are assigned by Railinc. There are three methods to find your company code. • Go to http://www.railinc.com. Click Products & Services and then click Component Tracking. • Call 1-877-RAILINC (1-877-724-5462) to speak to a Railinc representative • Send an email inquiry to [email protected] 2.4 AAR Component ID Number The number is used in union with the AAR Component ID Company Code for the purpose of creating a unique identification of the component or assembly. This number is generated and assigned by the AAR Component ID Company. This element is used only in combination with an AAR Component ID Company Code. 3.0 BAR CODE LABEL APPROVAL PROCESS 3.1 Each supplier generating or applying a bar code required by AAR’s Component Registry program must submit the information listed in section 3.2 to designated AAR staff for review and approval prior to use. This approval process is made available to ensure consistency and that the subsequent customer (the downstream user) has a central point to address questions and resolve conf licts. However, it is recommended that the supplier also works directly with each customer to ensure satisfactory performance. 3.2 The current process through which AAR CID bar codes are approved is as follows: 3.2.1 The supplier or facility required to apply the bar code must, by electronic mail, provide the following: A sample bar code design/layout as a bitmap image with the intended dpi printing resolution and compliant with any additional requirements outlined in the corresponding section of this standard. 3.2.2 A clear, legible .pdf image of five sample labels from each printer or each label vendor. Each .pdf image of five sample labels must be accompanied with the corresponding printer identification (make and model). 3.2.3 A PDF scanned cover sheet on company letterhead with a date of submission, indicating the following information: A statement requesting the approval of the bar code labels and a notation of the corresponding portion of this standard where the labeling will apply. The primary point of contact (name(s), direct physical mailing address, phone number and a direct email address (not a general intake address)). Other specific information that may be requested in the AAR circular or applicable standard (i.e., AAR Tank Car Facility Code (also known as a station stencil/QA code). 3.2.4 The labels will be analyzed an e-mail message stating the acceptance or required changes is sent or communicated, respectively. The supplier may be required to order new label stock, address requests for programming, and/or order parts for printers before the labels are approved. 3.2.5 Any changes to the printing equipment (make and model), label materials, bar code image layout, or bar code vendor must be communicated to AAR for review and approval per the process described above. 3.2.6 AAR may reserve the right to request physical copies of any items listed in this procedure. 3.2.7 The email address to submit the above is [email protected]. 04/2020 F [S-920] 3

AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021 4.0 GENERAL LABEL REQUIREMENTS 4.1 The print quality must be in accordance with American National Standards Institute (ANSI) Bar Code Quality Guideline [ANSI X3.182-1990(R1995)]. The ANSI print quality grade of “C” is the minimum acceptable standard. Note that future enhancements to support automated readers may require ANSI “A” or “B” print quality. 4.2 For both prototype and production labels using the approved symbologies, the expected first-read rate shall exceed 95%. A misread or no read shall be considered as one failure toward the percentage calculation for the first-read rate for new tags. 4.3 Each label shall consist of human-readable text and machine-readable data (bar code image) as described herein. The human-readable text and the bar code image are not required to contain the same amount of information, but both must contain the minimum data specified by the AAR CID specification, listed in the appropriate appendices. The payload must be formatted for each field exactly as specified in the appendix. The human-readable text may be formatted differently to enhance understanding, as long as it is equivalent. 4.4 The human-readable text is needed to allow a method for manual data collection when bar codes are damaged. The human-readable text must identify the subcomponent type and all of the required fields designated in Appendix A as required text. 4.5 Data fields required to be shown as human-readable text must be 12-point font or larger, sans-serif fonts preferred, unless otherwise specified. Other text used for description, titles, or other purposes may be of a smaller font (e.g., if a date is required to be printed, the word “Date:” may be 8-point font, but the actual date “1/1/2021” must be 12-point font or larger). 4.6 Other text and graphics are allowed, such as the manufacturer name, logos, non-AAR bar codes, etc., as long as they do not obscure the required information or interfere with AAR-required bar code readability. Any non-AAR bar code shall be identified as a non-AAR bar code and should be spaced at least 1/4 in. from any AAR bar code. 5.0 EQUIPMENT 5.1 A printer with a minimum resolution capability of 300 × 300 dpi shall be used for creating or reproducing AAR-required bar codes. 5.2 Bar code readers must support the decoding of the AAR-approved formats in the allowable layouts. Note that the ability to read a quality label quickly and repeatedly may be greatly influenced by the set-up and programming of the device, as well as the device quality. 5.3 Computer equipment used to generate or verify bar code dates and/or time stamps shall be automatically synchronized and manually verified no less than once per day. The accuracy of any created Coordinated Universal Time (UTC) time stamps also shall be verified. F [S-920] 4 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 6.0 LABEL MATERIALS AND APPLICATION IMPLEMENTED 07/2021 6.1 At a minimum, the label must be made of non-brittle, synthetic face stock. A synthetic, durable label with an aggressive permanent acrylic or other high-performance adhesive is recommended to provide a waterproof, scratch/tear-resistant, and durable label. Other labels or tags of a more durable nature may be used but must meet the minimum specifications outlined herein. 6.2 To achieve a high-contrast image, the face stock must not contain unnecessary tinting. Similarly, the face stock must be highly opaque so that the component surface is not visible through the label. 6.3 Resin or wax/resin ribbon ink in conformance with the latest specifications for materials manufactured is recommended. Direct thermal printing (with no ribbon) is not recommended because it tends to fade more readily. Black carbon-based inks are recommended because they also are readable with infrared scanners, whereas alcohol-based or dye-based inks are not. 6.4 Unless otherwise specified herein, the AAR-required bar code labels must be applied prior to shipping an applicable component or subcomponent to the user. At least one label shall be affixed to each component or assembly requiring a bar code. When no standard location has been designated, the labels shall be affixed or applied in a way that does not interfere with the operation of the component in service. The labels shall be applied in a conspicuous location to facilitate ease of reference while in service, while disassembled, and while in transport. The labels shall not obscure stamped markings. 6.5 The supplier shall be fully responsible for providing and attaching the labels to each component and for the accuracy of attachment to the correct component. The supplier must document the label application procedure, including necessary preparation steps that are dependent upon material conditions (rusty, clean, dirty, greasy) and environmental conditions (hot, cold, wet, dry, windy). 6.6 The supplier must verify scannability of each label once (after application but prior to shipment). If a supplier applies more than one label to a component, it is not necessary to verify scannability of the extra labels. Note that lighting can affect scanning performance. Outdoor readers shall utilize appropriate optics. Mercury vapor, helium neon, and other lighting sources may need special attention. It is sufficient to have a device that indicates a good read (audible or visible signal) without any system data transfer. 6.7 Labels shall maintain physical integrity, adhesion, and readability for the component while in inventory prior to assembly (for subcomponents) or application to rolling stock. 6.8 The supplier must provide a replacement bar code image to the customer upon request. The replacement image must be transmittable via e-mail as a Portable Document Format (PDF) file attachment and must be machine-readable when printed with a 300 × 300 or 600 × 600 dpi laser printer. 04/2020 F [S-920] 5

AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021 7.0 BAR CODE SYMBOLOGY AND CODING—GENERAL 7.1 Bar code symbologies shall be in accordance with Automatic Identification Manufacturers (AIM) Uniform Symbol Specification. 7.2 Carriage returns and line feeds are not allowed within the code for AAR-specified 1D or 2D symbologies. 7.3 For 1D bar codes, the supplier must use the Code128 symbology. This symbology uses a checksum to eliminate most errors. 7.4 For 2D bar codes, the supplier must use Data Matrix (ECC200) or PDF417 symbology. Multiple bar code images with identical information are encouraged, where possible. • The 2D Data Matrix (ECC200) symbology offers a maximum data character capacity of 2,335 text characters or 3,116 digits or 1,556 bytes. Data Matrix has benefits of generally being smaller than PDF417 for the same level of error correction, is readable with many of the cell phone applications, and supports direct part identification (imprinting on the part). • Data Matrix (ECC200) symbology must have an X dimension between 10 and 20 mil. A larger X dimension between 15 and 20 mil is preferred because it is more tolerant of damage. The square format must be used. • The 2D PDF417 symbology offers a maximum data character capacity of 1,850 text characters or 2,710 digits or 1,108 bytes. • The PDF417 symbology must have an X dimension between 10 and 20 mil. A larger X dimension between 15 and 20 mil is preferred because it is more tolerant of damage. The row height must be between 2× and 4×. The number of columns must be between 7 and 15 (9 to 11 is preferred). The minimum error correction level is dependent upon the size of the payload data according to the PDF417 standard. Error correction level 5 is appropriate for 321- to 863-byte payloads. 7.5 For 2D symbologies, the payload must be an XML-type data format as specified herein and by the W3C committee on XML (http://www.w3.org/standards/xml/). This minimizes the need to do any parsing or special programming and facilitates future modifications and additions with minimal efforts. 7.6 All XML time stamp fields must be given in UTC using the format “yyyy-mm-ddThh24:mi:ss” (e.g., 2011-12-30T23:59:59). The root element of the payload shall identify the component or subcomponent type (i.e., wheel, axle, and bearing) in the root element. 7.7 The 2D bar code images shall be designed to allow for additional information to be added without significant redesign of the label. 7.8 Required labels should not exceed 4 in. in height or width. F [S-920] 6 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 8.0 AAR-REQUIRED 1D CID LABELS 8.1 The 1D AAR CID label must contain the following specified information in human-readable format: • Supplier / Facility Name • Component name (i.e., WHEEL SET or BOLSTER) • “AAR Component Identification” or “AAR CID” 8.2 The 1D CID shall show the AAR Component ID Company Code field (upper case) and the AAR Component ID Number field separated by two to four spaces (e.g., “ABCD 1234567890”). The 1D bar code must have only a 14-character string in the code (e.g., “ABCD1234567890”) that includes the following: • The AAR Component ID Company Code (with trailing spaces for company codes of less than four characters) • The AAR Component ID Number (with leading zeros for numbers that require less than 10 digits) Note: The width of the image may be different, even with a fixed X dimension, depending on the pattern of letters, digits, and spaces. Therefore, it is recommended to design for all possible combinations. 8.3 For ease of scanning, the requisite 1D bar code image must be 0.50 in. high, minimum. IMPLEMENTED 07/2021 Additional, duplicate bar codes may be any size, as long as they are functional. 8.4 The X dimension on the requisite bar code must be between 10 and 20 mil. Larger X dimensions are desirable and shall be used to maximize the available space. 8.5 There must be a quiet zone on both ends of the requisite bar code, each at least 10 times the X dimension (e.g., 0.1 in. white space on either end of a bar code with a 10 mil (0.010 in.) X dimension). However, it is recommended that the quiet zone be at least 0.25 in. 9.0 AAR-REQUIRED 2D CID LABELS 9.1 Wheel Set Subcomponents 9.1.1 Wheels, bearings, and axles that are manufactured, remanufactured, or reconditioned must be identified by attaching a 2D bar code label containing the detail information as defined by this standard. This detail information is required to be read by a 2D bar code scanner and compiled at the time of wheel set assembly by a wheel shop. 9.1.2 Wheel set subcomponents (wheels, bearings, axles) must be identified by attaching a label containing the AAR-required data utilizing a 2D bar code. Apply a minimum of one AAR CID label to each component to facilitate reading during the wheel set assembly process. 9.1.3 The data payload must contain only data that is defined in Appendix A with an existing bar code element ID. Other than the root element tag (e.g., <wheel>) that defines the component or subcomponent, the defined bar code element IDs are the only allowable XML tags. The data payload must contain all elements required by the relevant AAR specifications of the Manual of Standards and Recommended Practices, Sections G, G-II, H, and H-II. 9.1.4 The data payload may contain XML tags for non-existent data (e.g., if the Extended Wheel codes are not required and not available, the payload may still contain the corresponding XML tags, <C119></C119>). The data payload may contain fields that comprise the component ID (CID) for the individual component along with the other requisite data fields in anticipation of or to facilitate future changes. It is expected that all subcomponents shall be required to have a CID in the future. 9.1.5 The wheel shop shall associate all detail information from the subcomponents with the CID for the entire wheel set assembly. This CID, created by the wheel shop parent company, shall be transmitted to Railinc along with the requisite subcomponent detail. 04/2020 F [S-920] 7

AAR Manual of Standards and Recommended Practices S-920 Sensors 10.0 WHEEL SET CID LABELS 10.1 Wheel sets must be identified by attaching a label containing the AAR Component Identifier (CID) for that wheel set. A minimum of one AAR CID label must be applied to the outside wheel plate (opposite the hub stamp) to facilitate reading before and after wheel sets are applied or when loaded on a trailer or f latcar. The label shall be placed on a relatively f lat portion of the plate to minimize curvature of bar code image and to minimize wrinkling of the label. 10.2 The wheel shop shall associate all detail information from the subcomponents with the wheel set CID. This CID, created by the wheel shop parent company, shall be transmitted to Railinc along with the requisite subcomponent detail. 10.3 A new CID shall be created for each wheel set leaving a facility. The CID must be unique, may not be reused, and must be used only once. 10.4 Sample Wheel Set Labels Sample payload (applies to Figs. 10.1 and 10.2): ABCD1234567890 Label Size (2.67 in. × 1.25 in.), Label Size (2.67 in. × 1.11 in.), IMPLEMENTED 07/2021 300 dpi bitmap (800 × 375 pixels), 12-point text 300 dpi bitmap (800 × 333 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil X dimension = 14.2 mil Data Payload = “ABCD1234567890” (without the quotes) Data Payload = “ABCD1234567890” (without the quotes) Note: The black border shown in this example is Note: The black border shown in this example is provided only to indicate size (not recommended). provided only to indicate size (not recommended). Fig. 10.1 Wheel set component ID—sample label Fig. 10.2 Wheel set component ID—sample label F [S-920] 8 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 11.0 WHEEL LABELS Wheel labels are required for new wheels only. 11.1 The label shall be placed on the inside or back plate of the wheel (side with manufacturer’s mark) on a relatively flat portion of the wheel plate and oriented to minimize label curvature. The label shall be placed in a location that minimizes the likelihood of submersion during storage. 11.2 Elements required in the payload include C103–C118 and C120, as listed in Appendix A. 11.3 Sample Wheel Labels Sample payload (applies to Figs. 11.1 and 11.2): IMPLEMENTED 07/2021 <Wheel><companyCode>ABCD</companyCode><idNumber>1234567890</idNumber> <C103>GRFI</C103><C104>2011-10-06T18:55:12</C104><C105>11</C105><C106>01</C106> <C107>GK</C107><C108>D</C108><C109>22</C109><C110>0</C110><C111>1231</C111> <C112>1234ABCD</C112><C113>36</C113><C114>CH</C114><C115>CP</C115> <C116>241.25</C116><C117>N</C117><C118>AMST1234</C118><C119>ABCD1234</C119> <C120>8.75</C120><C121>FUTURE01</C121><C122>FUTURE02</C122></Wheel> Notes: 1. The payload has no line feeds or carriage returns, but is shown on separate lines only for ease of reading. 2. The companyCode and the idNumber are optional. 3. <C118> is not required at this time. 4. <C121> and <C122> are for future use and should not be included at this time. Label Size (3 in. × 2 in.), Label Size (2 in. × 2 in.), 300 dpi bitmap (900 × 600 pixels), 12-point text 300 dpi bitmap (600 × 600 pixels), 12-point text (8-point Code PDF417-2D image (2.59 in. × 0.91 in.), descriptors) X dimension = 10.8 mil, Row Height = 2X, Code Data Matrix (ECC200) 2D image (1.08 in. × 1.08 in.), Columns = 9, EC = 5 X dimension = 15.2 mil Note: The black border shown in this example is Note: The black border shown in this example is provided only to indicate size (not recommended). provided only to indicate size (not recommended). Fig. 11.1 Wheel (with wheel CID)—sample label Fig. 11.2 Wheel (with wheel CID)—sample label 04/2020 F [S-920] 9

AAR Manual of Standards and Recommended Practices S-920 Sensors 12.0 AXLE LABELS Axle labels are required for new axles, converted axles, and secondhand axles. 12.1 To avoid mutilation on axle racks and by forklift tongs, the label must not be placed close to the wheel seat. The label shall be placed on the barrel, oriented to minimize bar code curvature, with the nearest edge approximately 6 in. from the middle of the axle. 12.2 Elements required in the payload for new axles include C303–C313, as listed in Appendix A. 12.3 Converted axles require C303–C313, as listed in Appendix A. 12.4 Secondhand axles require C303-318, as listed in Appendix A 12.5 Sample Axle Labels IMPLEMENTED 07/2021 Sample payload (applies to Figs. 12.1 and 12.2): <Axle><companyCode>ABCD</companyCode><idNumber>1234567890</idNumber> <C303>AXPA</C303><C304>2011-01-30T18:55:12</C304><C305>6.5</C305><C306>12</C306> <C307>1</C307><C308>123123 ABCDEF</C308><C309>RWS</C309><C310>7</C310> <C311>ABCD</C311><C312>2011-05-22T18:55:12</C312><C313>F+</C313><C314>AXIS1234</C314> <C315>AXIS1234</C315><C316>GRBX1234</C316><C317>FUTURE01</C317></Axle> Notes: 1. The payload has no line feeds or carriage returns, but is shown on separate lines only for ease of reading. 2. The companyCode and the idNumber are optional. 3. <C317> is for future use and should not be included at this time. Label Size (3 in. × 2 in.), Label Size (3 in. × 2 in.), 300 dpi bitmap (900 × 600 pixels), 12-point text 300 dpi bitmap (900 × 600 pixels), 12-point text Code PDF417-2D image (2.39 in. × 0.91 in.), Code Data Matrix (ECC200) 2D image 1 (0.084 in. × 0.084 in.), X dimension = 10.8 mil, Row Height = 2X, Columns = 8, X dimension = 12.5 mil EC = 5 Code Data Matrix (ECC200) 2D image 2 (1.32 in. × 1.32 in.), X dimension = 19.2 mil Note: The black border shown in this example is provided only to indicate size (not recommended). Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 12.1 Axle (with axle CID)—sample label Fig. 12.2 Axle (with axle CID)—sample label F [S-920] 10 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 12.6 Definitions Table 12.1 provides the definition for all axle characteristics that are intended to be reported under the requirements of C316. Should any other condition be requested, it must be presented to the WABL committee to ensure that any overlap and ambiguity between conditions is avoided. Table 12.1 Definitions of axle characteristics that are to be reported when tracked by the wheelshop Characteristic Short Name Definition a Body Repair Basic body defect repairs b Seat Repair Wheel seat repair c Fillet Repair Fillet repair d Cut and Face Axle with end cut and faced e Body Cut Fully machined axle body f Down Sized Down-sized axle g Over Sized Axle with oversized wheel seats h Roll Burnished Journal roll burnished i EC Tested Eddy current inspected for surface cracks j Blank Not currently used k Blank Not currently used IMPLEMENTED 07/2021 l Blank Not currently used m Blank Not currently used The field value is a string of 8 digits that represents the concatenation of two four-digit strings. Each of the four-digit strings is coded as described below, with the first four representing the codes to be reported by a wheelshop (i.e., all characters intended to be tracked) and the second four representing the current state of the axle. The four digits must be padded with all necessary leading zeros. Each four-digit value is the decimal equivalent of a binary encoding of the axle condition where each characteristic, a through m, maps to a single bit where 0 or 1 represents the absence or presence respectively of that characteristic during the current reconditioning cycle. The binary equivalent of the first four digits serve as the bitwise maximum of the value for the second four. Fig. 12.3 Example of encoding of the axle characteristics tracked using C316 where the axle has characteristics c,e, and i where the wheelshop tracks a,b,c,d,e,f, and i on all axles from their facility 04/2020 F [S-920] 11

AAR Manual of Standards and Recommended Practices S-920 Sensors 13.0 BEARING LABELS Bearing labels are required for new and reconditioned bearings. 13.1 The standard label location designated for a bearing is near the outer cup centerline. The label is not required to be readable after installation on a freight car. To avoid bar code damage during shipping, two bar codes shall be located on the label such that abrasion with another cup shall affect only one of the bar codes. The label shall not obscure the bearing cup stamping. 13.2 Elements required in the payload for new bearings include C203–C218, as listed in Appendix A. 13.3 Reconditioned bearings require C203–C218, as listed in Appendix A. 13.4 Sample Bearing Labels Sample payload: <Bearing><companyCode>TMK1</companyCode><idNumber>1234567890</idNumber> <C203>TRBC</C203><C204>2011-01-30T18:55:12</C204><C205>12345678</C205> <C206>11</C206><C207>01</C207><C208>6.5</C208><C209>12</C209><C210>5A</C210> <C211>R</C211><C212>GRBX1234</C212><C213>GRBX1234</C213><C214>GRBX1234</C214> <C215>GRBX1234</C215><C216>GRBX1234</C216><C217>FUTURE001</C217> <C218>FUTURE002</C218><C219>FUTURE003</C219><C220>FUTURE004</C220></Bearing> Notes: 1. The payload has no line feeds or carriage returns, but is shown on separate lines only for ease of reading. 2. The companyCode and the idNumber are optional. 3. <C118> is not required at this time. 4. <C217>, <C218>, <C219>, and <C220> are for future use and should not be included at this time. IMPLEMENTED 07/2021 BEARING AXIS Label Size (3.5 in. × 2.5 in.), 300 dpi bitmap (1050 × 750 pixels), 12-point text (8-point descriptor) Code PDF417 2D image 1 (rotated 2.19 in. × 1.08 in.), X dimension = 10.8 mil, Row Height = 2X, Columns = 7, EC = 5 Code Data Matrix (ECC200) 2D image 2 (1.32 in. × 1.32 in.), X dimension = 14.2 mil Note: The black border shown in this example is provided only to indicate size (not recommended). The 1 1/2 in. letter N (required in MSRP G-II) is not required to be on this label, but it may be. Fig. 13.1 Bearing (with bearing CID)—sample label 04/2020 F [S-920] 12

AAR Manual of Standards and Recommended Practices S-920 Sensors 14.0 BOLSTER CID LABELS 14.1 Foundries and reconditioners shall identify bolsters by creating and attaching an AAR Component Identifier (CID) label for that casting. A unique CID shall be created for each bolster leaving a facility. All pertinent detail information from the bolster, listed in Appendix B, shall be associated with the CID. 14.2 The CID label must be either physically applied to the side wall (below side bearing pad) or hung within a protective clear bag securely attached to the casting. An alternative location would be to place the CID label at the top edge of the bolster, outboard of the friction pocket. If physically applied, the label shall be placed on a relatively f lat portion of the casting to minimize wrinkling. The label shall not cover any other required markings or stenciling on the casting. 14.3 Foundries and reconditioners shall register bolsters by transmitting the CID and associated information to Railinc. 14.4 Sample Bolster Labels Sample payload (applies to Fig. 14.1): ABCD1234567890 Label Size (2.67 in. × 1.25 in.), IMPLEMENTED 07/2021 300 dpi bitmap (800 × 375 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil Data Payload = “ABCD1234567890” (without the quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 14.1 Bolster component ID—sample label 04/2020 F [S-920] 13

AAR Manual of Standards and Recommended Practices S-920 Sensors 15.0 SIDE FRAME CID LABELS 15.1 Foundries and reconditioners shall identify side frames by creating and attaching the AAR Component Identifier (CID) label for that casting. A unique CID shall be created for each side frame leaving a facility. All pertinent detail information from the side frame, listed in Appendix C, shall be associated with the CID. 15.2 A minimum of one AAR CID label must be either physically applied on the compression member above the window or hung within a protective clear bag securely attached to the casting. Alternative locations would be to place the CID label on the outside top end of the side frame or on the field side of the frame above the pedestal roof. If physically applied, the label shall be placed on a relatively f lat portion of the casting to minimize wrinkling of the label. The label shall not cover any other required markings or stenciling on the casting. 15.3 Foundries and reconditioners shall register side frames by transmitting the CID and associated information to Railinc. 15.4 Sample Side Frame Labels Sample payload (applies to Fig. 15.1): ABCD1234567890 IMPLEMENTED 07/2021 Label Size (2.67 in. × 1.25 in.), 300 dpi bitmap (800 × 375 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil Data Payload = \"ABCD1234567890\" (without the quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 15.1 Side frame component ID—sample label F [S-920] 14 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 16.0 COUPLER CID LABELS 16.1 Foundries and reconditioners shall identify couplers by creating and attaching an AAR Component Identifier (CID) label for that casting. A unique CID shall be created for each coupler leaving a facility. All pertinent detail information from the coupler, listed in Appendix D, shall be associated with the CID. 16.2 The CID label must be either physically applied to the coupler shank or hung within a protective clear bag securely attached to the casting. Alternative locations include the coupler guard arm side (between the lightener holes) or the side of the coupler horn. 16.3 If physically applied, the label shall be placed on a relatively flat portion of the casting to minimize wrinkling. The label shall not cover any other required markings or stenciling on the casting. 16.4 Foundries and reconditioners shall register couplers by transmitting the CID and associated information to Railinc. 16.5 Sample Coupler Labels Sample payload (applies to Fig. 16.1): ABCD1234567890 Label Size (2.67 in. × 1.25 in.), IMPLEMENTED 07/2021 300 dpi bitmap (800 × 375 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil Data Payload = \"ABCD1234567890\" (without the quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 16.1 Coupler component ID—sample label 04/2020 F [S-920] 15

AAR Manual of Standards and Recommended Practices S-920 Sensors 17.0 EMERGENCY BRAKE VALVE PORTION CID LABELS 17.1 OEM and reconditioned emergency valve portions must be identified by attaching a label containing the AAR component identifier (CID) for that valve portion. A unique CID shall be created for each valve portion, and the CID cannot be reused. All pertinent detail information for an emergency brake valve portion, listed in Appendix E, shall be associated with the CID. A minimum of one AAR CID label must be applied to each valve. Any additional AAR CID labels applied to an individual valve portion must have the same CID. 17.2 Sample Emergency Brake Valve Portion Labels Elements required in the payload for the emergency brake valve portion are shown in Fig. 17.1. Label Size (2.67 in. × 1.1 in.), 300 dpi bitmap (800 × 333 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil Data Payload = \"ABCD1234567890\" (without the quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). IMPLEMENTED 07/2021 Supplier Name EMER AAR CID: ABCD 1234567890 Fig. 17.1 Emergency brake valve portion—sample label 17.3 OEMs and reconditioners shall register emergency brake valve portions by transmitting the CID and associated information to Railinc prior to shipping. 3.75 2.81 1.110 1.29 R. 44 ĭ .09 TYP. 4X R. 09 .11 AAR BARCODE STICKER 2.67 X 1.11 REF NOTE: TAG METAL TO BE EITHER ALUMINUM, 20 GAUGE, NOMINAL 0.032 IN. (0.81 MM) THICK; OR STAINLESS STEEL, 22 GAUGE, NOMINAL 0.031 IN. (0.79 MM) THICK Fig. 17.2 Dimensions of ABD-style metal tag F [S-920] 16 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 17.4 The standard label for valve portions shall consist of a metal tag or pad machined into the casting with the AAR CID label attached. The dimensions of the tag are shown in Fig. 17.2 and Fig. 17.3. NOTES: IMPLEMENTED 07/2021 1. THE MACHINED SURFACE NEEDS TO BE A MINIMUM OF 2.81\" [71.37MM] X 1.29\" [32.77MM] 2. MATERIAL: 20 GAUGE ALUMINUM, 0.032 NOMINAL [0.81MM] THICK 3. ALTERNATE: 22 GAUGE STAINLESS STEEL, NOMINAL 0.031 [ 0.079MM] THICK Fig. 17.3 Dimensions for DB-20/DB-20L metal tag 17.5 The standard label location for valve portions is the application of the metal tag under one of the top cover bolts. Locations of metal tag are shown in Fig. 17.4 for ABD-style portions and Fig. 17.5 for DB-style portions requiring metal tags and Fig. 17.6 for DB-style portion with CID label machines pad on casting (no metal tag required). ASAuRppClIiDe:rANBaCmDe 12345E67M8E9R0 Fig. 17.4 Metal tag location for ABD-style portion Fig. 17.5 Metal tag location for DB-style portion 04/2020 F [S-920] 17

AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021 Fig. 17.6 Casting Pad CID Location for DB-Style Portions 18.0 SERVICE BRAKE VALVE PORTION CID LABELS 18.1 OEM and reconditioned service valve portions must be identified by attaching a label containing the AAR component identifier (CID) for that valve portion. A unique CID shall be created for each valve portion, and the CID cannot be reused. All pertinent detail information for each valve, listed in Appendix F, shall be associated with the CID. A minimum of one AAR CID label must be applied to each valve. Any additional AAR CID labels applied to an individual valve portion must have the same CID. 18.2 Sample Service Brake Valve Portion Labels Elements required in the payload for the service brake valve portion are shown in Fig. 18.1. Label Size (2.67 in. × 1.1 in.), 300 dpi bitmap (800 × 333 pixels), 12-point text Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil Data Payload = \"ABCD1234567890\" (without the quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Supplier Name SERV AAR CID: ABCD 1234567890 Fig. 18.1 Service brake valve portion—sample label 04/2020 F [S-920] 18

AAR Manual of Standards and Recommended Practices S-920 Sensors 18.3 OEMs and reconditioners shall register service brake valve portions by transmitting the CID and associated information to Railinc prior to shipping. 18.4 The standard label for valve portions shall consist of a metal tag with the AAR CID label attached. The dimensions of the tag are shown in Fig. 18.2 and Fig. 18.3. 3.75 2.81 1.110 1.29 R. 44 ĭ .09 TYP. 4X R. 09 IMPLEMENTED 07/2021 .11 AAR BARCODE STICKER 2.67 X 1.11 REF NOTE: TAG METAL TO BE EITHER ALUMINUM, 20 GAUGE, NOMINAL 0.032 IN. (0.81 MM) THICK; OR STAINLESS STEEL, 22 GAUGE, NOMINAL 0.031 IN. (0.79 MM) THICK Fig. 18.2 Dimensions of ABD-style metal tag NOTES: 1. THE MACHINED SURFACE NEEDS TO BE A MINIMUM OF 2.81\" [71.37MM] X 1.29\" [32.77MM] 2. MATERIAL: 20 GAUGE ALUMINUM, 0.032 NOMINAL [0.81MM] THICK 3. ALTERNATE: 22 GAUGE STAINLESS STEEL, NOMINAL 0.031 [ 0.079MM] THICK Fig. 18.3 Dimensions for DB-10/DB-10C metal tag 04/2020 F [S-920] 19

AAR Manual of Standards and Recommended Practices S-920 Sensors 18.5 The standard label location for valve portions is the application of the metal tag under one of the top cover bolts. Locations of metal tag are shown in Fig. 18.4 for ABD-style portions and Fig. 18.5 for DB-style portions requiring metal tags and Fig. 18.6 for DB-style portion with CID label machines pad on casting (no metal tag required). IMPLEMENTED 07/2021Fig. 18.4 Metal tag location for ABD-style portion Fig. 18.5 Metal tag location for DB-style portion ASAuRpplCiIeDr.NAaBmCeD 123S4E56R7V890 Fig. 18.6 Casting Pad CID Location for DB-Style Portions 19.0 SLACK ADJUSTER CID LABELS 19.1 OEM and reconditioned slack adjusters must be identified by attaching a label containing the AAR component identified (CID) for that slack adjuster. A unique CID shall be created for each slack adjuster, and the CID cannot be reused. All pertinent detail information for the slack adjuster, listed in Appendix G, shall be associated with the CID. A minimum of one AAR CID label must be applied to each slack adjuster. Any additional AAR CID labels applied to an individual slack adjuster must have the same CID. F [S-920] 20 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors 19.2 Sample Slack Adjuster Labels Elements required in the payload for the slack adjuster are shown in Fig. 19.1. Label size (2.67 in. × 1.1 in.) 300 dpi bitmap (800 × 333 pixels) 12-point text Code 128-1D image (2.35 in. × .50 in.) × dimensions = 14.2 mil Data payload = “ABCD1234567890” (without quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 19.1 Slack adjuster—sample label IMPLEMENTED 07/2021 19.3 OEMs and reconditioners shall register slack adjusters by transmitting the CID and associated information to Railinc prior to shipping. 19.4 The CID label must be physically applied to the body of the slack adjuster flat with a minimal amount of wrinkling. 20.0 CUSHIONING UNIT CID LABELS 20.1 OEM and reconditioned end-of-car cushioning units must be identified by attaching a label containing the AAR component identified (CID) for that cushioning unit. A unique CID shall be created for each cushioning unit, and the CID cannot be reused. All pertinent detail information for the cushioning unit, listed in Appendix H, shall be associated with the CID. A minimum of one AAR CID label must be applied to the bottom housing of each cushioning unit. Any additional AAR CID labels applied to an individual cushioning unit must have the same CID. 20.2 Sample Cushioning Unit Labels Elements required in the payload for the cushioning unit are shown in Fig. 20.1. Label size (2.67 in. × 1.1 in.) 300 dpi bitmap (800 × 333 pixels) 12-point text Code 128-1D image (2.35 in. × .50 in.) × dimensions = 14.2 mil Data payload = “ABCD1234567890” (without quotes) Note: The black border shown in this example is provided only to indicate size (not recommended). Fig. 20.1 Cushioning Unit---sample label 20.3 The CID label must be physically applied to the housing of the cushioning unit flat with a minimal amount of wrinkling. 20.4 OEMs and reconditioners shall register cushioning units by transmitting the CID and associated information to Railinc prior to shipping. 04/2020 F [S-920] 21

AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021 21.0 TANK CAR SERVICE EQUIPMENT – SAFETY RELIEF DEVICES CID LABELS 21.1 Pressure Relief Valve 21.1.1 Each new pressure relief valve (PRV) for tank cars must be identified with an AAR Component ID (CID) by the C4a or C4m tank car facility. 21.1.2 Label is applied to an all metal tag (aluminum or stainless); or a weather resistant, aluminum-laminated cardstock tag. 21.1.3 All data elements and informational details listed in Appendix I shall be reported within the AAR component registry for each new and reconditioned pressure relief valve by the respective C4a, C4m, or C5 tank car facility. 21.1.4 Each CID is unique to a PRV and cannot be reused on any other PRV. A minimum of one (1) CID label shall be applied to each PRV. Any additional CID labels must be a duplicate of the original CID label. 21.1.5 Pressure Relief Valve Label The label generated must meet the following: • Minimum label size 2.5 in. x 1 in. (or 750 pixels × 300 pixels) • 300 dpi bitmap • Human-readable text minimum font size is 10-point, except data payload which must be 12-point • Code 128-1D image (2.35 in. × 0.50 in.), X dimension = 14.2 mil • Data Payload = \"ABCD1234567890\" (without the quotes) Note: The string of alpha numeric characters underneath the bars is the payload for the barcode. The bars contain the same payload information which is the AAR Component Identification (CID). 21.1.5.1 Each label must contain the following human-readable text: • Tank Car PRV • Element ID D102 – AAR Tank Car Facility Code • Element ID D116 – O-Ring/Seal Material Applied (As Tested) • AAR Component Identification (CID) Refer to Fig. 21.1 for the Layout of Sample Label and Fig. 21.2 for Tank Car Pressure Relief Valve – Completed Sample Label. Tank Car PRV 2.5 in. Element ID D116 Element ID D102 1 in. AAR Component Identification (CID) Fig. 21.1 Layout of Sample Label Note: The black border shown in this example is provided only to indicate size (printed border not recommended). Tank Car PRV Facility Code: ZYWX O-Ring/Seal: Viton A AAR CID: ABCD1234567890 04/2020 F [S-920] 22

AAR Manual of Standards and Recommended Practices S-920 Sensors Fig. 21.2 Tank Car Pressure Relief Valve—Completed Sample Label 21.1.6 The standard AAR CID label may be applied to a pressure relief valve by one of two methods: 21.1.6.1 Label is applied directly to the body of the valve on a smooth surface above the mounting flange (e.g. a flue, top cap, or protective cover) as shown in Fig. 21.3. Label orientation must minimize bar code curvature and wrinkling; and must not obscure or cover any other required markings or name plates. 21.1.6.2 Label is applied to an all metal tag (aluminum or stainless); or a weather resistant, aluminum-laminated cardstock tag. The minimum dimensions of the tag are 2.75” high x 1.29” wide x 0.02” thick as shown in Fig. 21.4 (reinforcing grommet optional). Attachment of the tag to the valve body is via a metal wire or plastic cable tie as shown in Fig. 21.5. 21.1.6.3 In either application, the label, tag, or its attachment / position on the pressure relief valve must not interfere with the bolt pattern for mounting or installation to the tank car. 21.1.6.4 The CID label and/or tag must not be applied to any portion of the valve body below the mounting flange or where the label would be exposed to the interior contents of the tank car. Facility Code: ZYWX AAR CID: ABCD1234567890 IMPLEMENTED 07/2021 Tank Car PRV O-Ring/Seal: Viton A 04/2020 Fig. 21.3 Typical direct application of CID label F [S-920] 23

AAR Manual of Standards and Recommended Practices S-920 Sensors Fig. 21.4 Tag Dimensions for CID Label IMPLEMENTED 07/2021 Tank Car PRV Facility Code: ZYWX O-Ring/Seal: Viton A AAR CID: ABCD1234567890 Fig. 21.5 Typical attachment of tag with CID label F [S-920] 24 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX A APPENDIX A WHEEL SET DATA GLOSSARY Element ID Name Sample(s) Text On Label (XML tag) GRBX1234567890 R = Required C = Conditional Full Description Wheel Set Bar Code R 4 characters w/trailing spaces + 10 digits with leading zeros. The trailing n/a AAR Component ID spaces and leading zeros are necessary because some company codes (Wheel Set) contain digits and this allows easy data parsing. This shall not be used in a combined field to input 14 bytes in order to avoid parsing issues that could companyCode Component ID Company GRBX lead to data integrity issues. Code 1234567890 4 characters max, no trailing spaces. Because this is a data field all by itself, idNumber Component ID Number it has already been parsed out and no trailing spaces are needed. This field must be generated by the wheel shop company and be included in C003 Component AAR Facility PVLN the wheel set registration data sent to Railinc for all wheel sets. IMPLEMENTED 07/2021 Code 10 digits max, no leading zeros. Because this is a numeric field al by itself, C004 Component Assembly 2011-03-01T14:24:25 there is no need for adding leading zeros. This field must be generated by the wheel shop company and be included in Timestamp the wheel set registration data sent to Railinc for all wheel sets. C005 Extended Wheel Set Codes GRBX1234 4 characters max, no leading spaces. Because this is a data field all by itself, (currently required to be left it has already been parsed out and no leading spaces are needed. This is the blank) facility code assigned by the AAR QA committee. This field must be included in the wheel set registration data sent to Railinc for C006 Shipping Codes GRBX1234 all wheel sets. (currently required to be left blank) Time stamp to no less than seconds precision. You may choose to simply give the UTC date and time (use T:00:00:00 if time is not available), but if there is C007 Component Defect Flag Y a logical time available, it should be used. This is typically the time that the B or P wheel set was finally inspected or when the wheel set was last wanded or C008 Component Source Y or N some other useful attribute of your process. This field must be included in the wheel set registration data sent to Railinc for C009 Partial Registration all wheel sets. C010 Component Registration These are internal codes but designed to be included/documented in the AAR Date standards. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits C011 Purchased Core Turned with leading zeros. When used, the codes and their general meaning must be communicated to the AAR so that conflicts do not arise. An example would be that Company XXXX used code XXX on wheel sets produced with a maximum runout of 0.003 in. It is meant to enable quality improvements that would otherwise be very difficult to implement or track. These are internal codes but designed to be included in the AAR standard. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits with leading zeros. When used, the codes and their general meaning must be communicated to the AAR so that conflicts do not arise. In the future, some codes may be mandatory. It is intended that this field be used to assist with improved shipping and inventory management by providing customers with relevant attributes about the process. These are internal codes to indicate that a component is flagged with a defect. This can only be set by a Railinc Application Administrator. These are internal codes to indicate the source of the component registration. Primarily used for backfill. These are internal codes to indicate if the registration is a partial registration. B=CRB backfill P=Field partial. These are internal codes for the component registration date. This field is to identify purchased core wheel sets at the time of wheel set registration. It is only available if Wheelset_C117 - Wheel New Turned is set to \"Turned.” 04/2020 F [S-920] 25

APPENDIX A AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)AAR Component ID8AMS1234567890 R = Required Same as any AAR Component ID—see wheel set definition for instance. C = ConditionalWheel Bar CodeAllows a company to prepurchase bar code labels and avoid expense of printers and downtime with the tradeoff of requiring electronic messaging to n/a send the details to Railinc. Note that the consumer of these components (i.e., wheel shops) would also have to build a process for retrieving the detail data companyCode Component ID Wheel 8AMS electronically. Company Code 4 characters max, 2 characters min, no leading spaces. Also a single idNumber Component ID Wheel 1234567890 character followed by 3 digits. Number GWW This field must be included in the wheel set registration data sent to Railinc for wheel sets with new wheels if provided by the wheel manufacturer. This field C103 Wheel AAR Facility Code will not be populated on wheel sets with turned wheels. C104 Wheel Manufactured 2011-02-01T02:55:12 10 digits max, no leading zeros. This field must be included in the wheel set registration data sent to Railinc for Timestamp wheel sets with new wheels if provided by the wheel manufacturer. This field will not be populated on wheel sets with turned wheels. C105 Wheel Stamped year 11 C 4 characters max, no leading spaces. Because this is a data field all by itself, it has already been parsed out and no leading spaces are needed. This is the facility code assigned by the AAR QA committee. This field must be provided by the wheel manufacturer and be included in the wheel set registration data sent to Railinc for wheel sets with new wheels. This field will not be populated on wheel sets with turned wheels. Time stamp to no less than seconds precision. You may choose to simply give the UTC date and time (use T:00:00:00 if time is not available), but if there is a logical time available, it should be used. This is typically the time that the wheelt was finally inspected or when the wheel was last wanded or some other useful attribute of your process. This field must be provided by the wheel manufacturer and be included in the wheel set registration data sent to Railinc for wheel sets with new wheels. This field will not be populated on wheel sets with turned wheels. R 2 digits only—a year. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. F [S-920] 26 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX A Element ID Name Sample(s) Text On Label (XML tag) 01 R = Required C = Conditional Full Description Wheel Bar Code (continued) R 2 digits only—a month. C106 Wheel Stamped Month This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to C107 Wheel Stamped Mfg Code GK Railinc for all wheel sets. C108 Wheel Stamped Class A, B, C, D, or U R Wheel markings for current or historical wheel manufacturers—XX is not allowed for registration. C109 Wheel Rim Thickness Side 22 This field must be provided by the wheel manufacturer or be determined by Scale Reading the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. IMPLEMENTED 07/2021 C110 Wheel Finger Gauge 0,1, …… Reading R The stamped wheel material class: A,B,C,D, U. Also called the heat treat class. This term is used loosly and is not well defined, but is standard and C111 Wheel Stamped Serial 1231 consistent. Number This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to C112 Wheel Heat/Melt 1234ABCD Railinc for all wheel sets. Number of 16th inches of rim thickness according to Field Manual of the AAR Interchange Rules, Rule 41, using the steel wheel gauge. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. Finger reading according to Rule 41. A narrow full-flange contour is defined as a finger reading less than 2. Max indicated is 11. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. R Up to 8 digits/letters. Examples of 6 digits are in the MSRP, but not well defined nor required. Whether the stamping on the wheel contains only a serial number or a combined heat and serial number, the entire stamped string shall be entered in this field as the serial number. Note: some manufacturers have used letters as a part of the serial number—WABL's opinion was that these instances were rare and not necessary to include. Several companies are using letters as a part of their serial number and it has been verified that there are serveral thousand of these being processed each year. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. Up to 8 digits or characters according to manufacturer—no existing specification. Even if the heat or melt information is somehow contained in the stamped serial number, the applicable portion shall be supplied in this field. For companies with no such designation currently, a logical attribute that corresponds to a grouping of wheels shall be chosen and supplied. This field must be provided by the wheel manufacturer and be included in the wheel set registration data sent to Railinc for new wheel sets. This field will not be populated on wheel sets with turned wheels. 04/2020 F [S-920] 27

APPENDIX A AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)36 R = Required R The nominal design diameter (stamped on wheel as part of the wheel design C = ConditionalWheel Bar Code (continued)designation); 28, 30, 33,3 6, 38 are typical for freight cars—up to 45 on locomotives. C113 Wheel Nominal Diameter This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to C114 Wheel Design Code CH Railinc for all wheel sets. C115 Wheel Plate Type CP or SP R Part of the wheel design designation stamped on a wheel prior to the nominal diameter. C116 Wheel Tape Size 241.25 This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to C117 Wheel New or Turned N Railinc for all wheel sets. C118 Wheel Rim Type CP or SP (Curved Plate or Straight Plate) The straight-plate design is called a (currently required to be left high-stress design because heat input creates large stresses in these wheels. blank) Curved-plate designs are called low-stress designs because they flex upon heating to allow relief. C119 AAR Contour for Freight Car 1B or 2A This field must be provided by the wheel manufacturer or be determined by Wheels the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. C120 Rough Wheel Bore 10.75 The circumference on a new wheel or newly turned wheel according to a wheel tape. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. R A new wheel is one that has not yet been in service. A turned wheel was removed from service and subsequently processed at a wheel shop. This designation actually applies to the wheel set and should probably be C007—Railinc and Component Tracking to determine handling. This field must be provided by the wheel manufacturer or be determined by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. 1W, 2W, or MW—one-wear, two-wear or multi-wear. This is needed for determining job codes but can be derived from the wheel design code and nominal diameter. It was determined that this not be input or sent by the wheel manufacturer or wheel shop, but that it be derived by Railinc upon registration. This field is not required to be provided by the wheel manufacturer, not determined by the wheel shop, and not required to be sent to Railinc for registration. Railinc will derive this field from the Wheel Design Code and Wheel Nominal Diameter. The AAR tread contour to which the wheel is manufactured for new or to which the wheel is machined for turned. This field must be provided by the wheel manufacturer or by the wheel shop and be included in the wheel set registration data sent to Railinc for all wheel sets. R Rough wheel bore on new wheels shipped to wheel shops—not useful for registration and not sent to RailInc—only sent by OEM to wheel shop on new wheels. This field must be provided by the wheel manufacturer on new wheels. It is not required to be sent to Railinc for registration. F [S-920] 28 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX A Element ID Name Sample(s) Text On Label (XML tag) 8TIM1234567890 R = Required C = Conditional 8TIM Full Description Bearing Bar Code 4 characters w/trailing spaces + 10 digits with leading zeros. n/a AAR Component ID (bearing 1) 4 characters max, no trailing spaces. This field must be included in the wheel set registration data sent to Railinc for companyCode Component ID bearing wheel sets with new or reconditioned bearings if provided by the bearing Company Code manufacturer or reconditioner. idNumber Component ID bearing 1234567890 10 digits max, no leading zeros. Number This field must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings if provided by the bearing C203 Bearing AAR OEM/Recon BVA manufacturer or reconditioner. Facility Code R 4 characters max, no leading spaces. Because this is a data field all by itself, C204 Bearing Manufactured 2011-02-01T18:55:12 it has already been parsed out and no leading spaces are needed. This is the IMPLEMENTED 07/2021 facility code assigned by the AAR QA committee. Timestamp This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel C205 Bearing Cup Serial Number* 12345678 sets with new or reconditioned bearings. C206 Bearing Cup Stamped Year 08, 09, 10, 11, .......... Time stamp to no less than seconds precision. You may choose to simply give the UTC date and time (use T:00:00:00 if time is not available), but if there is a logical time available, it should be used. This is typically the time that the bearing was finally inspected or when the bearing was last wanded or some other useful attribute of your process. This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. R* Up to 8 digits. Examples in the MSRP, but not well defined. * Required for new bearings 4/1/2012 within the bar code and the human-readable text. Required for reconditioned bearings starting 1/1/2013 within the bar code and the human-readable text. This field must be provided by the bearing manufacturer and must be included in the wheel set registration data sent to Railinc for wheel sets with new bearings. Reconditioners must provide this information starting in 2013. Partial markings, to the extent that they can be read, are acceptable on reconditioned product. R Must be 2 digits—a year. Required for new bearings 4/1/2012 within the bar code and the human-readable text. Required for reconditioned bearings starting 1/1/2013 within the bar code and the human-readable text. This field must be provided by the bearing manufacturer and must be included in the wheel set registration data sent to Railinc for wheel sets with new bearings. Reconditioners must provide this information starting in 2013. Partial markings, to the extent that they can be read, are acceptable on reconditioned product. This field is required if available, otherwise leave blank. 04/2020 F [S-920] 29

APPENDIX A AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag) R = Required C = ConditionalBearing Bar Code (continued) C207 Bearing Cup Stamped Month 01 R 2 digits only—a month (although at least one manufacturer uses a letter for the stamped month and at least one other wants to start). The numeric representation is preferred and shall be used in all databases and electronic or paper communications. Required for new bearings 4/1/2012 within the bar code and the human-readable text. Required for reconditioned bearings starting 1/1/2013 within the bar code and the human-readable text. This field must be provided by the bearing manufacturer and must be included in the wheel set registration data sent to Railinc for wheel sets with new bearings. Reconditioners must provide this information starting in 2013. Partial markings, to the extent that they can be read, are acceptable on reconditioned product. This field is required if available, otherwise leave blank. C208 Bearing Nominal Diameter 5.5, 6, 6.0, 6.5, 7, R This field must be provided by the bearing manufacturer or reconditioner and 7.0................ must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. C209 Bearing Nominal Length 8, 9, 10, ................ R This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. C210 Bearing Certificate # 1, 1A, 2, 3, 3A ................. This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. C211 Bearing New or N or R R This field must be provided by the bearing manufacturer or reconditioner and Reconditioned must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. C212 AAR Extended Bearing GRBX1234 These are codes designed to support future requirements of the AAR Codes standards. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits (currently required to be left with leading zeros. An example would be that Company XXXX would use code blank) 9XXX on bearings produced with a defect-free designation. It is intended that this code enable tracking and support premium designations that would otherwise be very difficult to implement or track. This field, if provided by the bearing manufacturer or reconditioner, must be sent to Railinc for registration. C213 Bearing Seal Type 8AMS0001 These are codes designed to be used as standardized part numbers. These standardized part number codes will be used instead of the company's internal part numbers. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits with leading zeros. An example would be that Company XXXX would use code XXX1 on bearings produced with rubbing-type seal design ABCDEF as defined in the grease/seal matrix. This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. F [S-920] 30 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX A Element ID Name Sample(s) Text On Label Full Description (XML tag) XOMX0001 R = Required C = Conditional These are codes designed to be used as standardized part numbers. These standardized part number codes will be used instead of the company's internal Bearing Bar Code (continued) part numbers. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being C214 Bearing Grease Type digits with leading zeros. An example would be that Company XXXX would use code XXX1 on bearings produced with grease type ZZZZZZ as defined in C215 Bearing Cage Type 8SKF0001 the grease/seal matrix. This field must be provided by the bearing manufacturer or reconditioner and C216 Bearing Backing Ring Type 8TIM0001 must be included in the wheel set registration data sent to Railinc for wheel IMPLEMENTED 07/2021 sets with new or reconditioned bearings. C217 Bearing Locking Plate Type AARX0001 These are codes designed to be used as standardized part numbers. These C218 Inboard Seal S, E, P, N standardized part number codes will be used instead of the company's internal Wear Ring Type part numbers. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits with leading zeros. An example would be that Company XXXX would use code XXX1 on bearings produced with a steel cage and code XXX2 for bearings produced with poly cages with part number 123456 as defined in MSRP Section H or HII. This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. These are codes designed to be used as standardized part numbers. These standardized part number codes will be used instead of the company's internal part numbers. The format is a fixed format with the first four characters being the company code with leading spaces and the last four characters being digits with leading zeros. An example would be that Company XXXX would use code XXX1 on bearings produced with a universal backing ring with part number 123456 and code XX1X on bearings produced with a Standard fitted backing ring with part number 234 as defined in MSRP section H or HII. This field must be provided by the bearing manufacturer or reconditioner and must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings. Valid values include AARX0001 (standard locking plate) and 8STG0002 (alternate standard, Stage 8 locking plate). This field must be provided by the bearing manufacturer or reconditioner in the 2D barcode payload only in cases when using the alternate standard locking plate. This field must be included in the wheel set registration data sent to Railinc for wheel sets with new or reconditioned bearings effective July 1, 2013. This field is required to be entered by the wheel shop registering the wheel set if it contains Stage 8 locking plates effective December 12, 2012. This field is required to identify the type of wear ring included in the bearing assembly. The type must be one of S (standard) E (extended), P (composite/polymer), or N (not applicable). Field to be mandatory for bearings manufactured after January 1, 2022 04/2020 F [S-920] 31

APPENDIX A AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag) R = Required8AMS12345678904 characters w/trailing spaces + 10 digits with leading zeros C = ConditionalAxle Bar Code8AMS 4 characters max, no trailing spaces. n/a AAR Component ID (Axle) This field must be included in the wheel set registration data sent to Railinc for wheel sets with new or converted axles if provided by the axle manufacturer companyCode Component ID Axle or converter. Company Code 10 digits max, no leading zeros. idNumber Component ID Axle Number 1234567890 This field must be included in the wheel set registration data sent to Railinc for wheel sets with new or converted axles if provided by the axle manufacturer C303 Axle AAR Facility Code RIOO or converter. C304 Axle Manufactured 2011-02-01T18:55:12 C 4 characters max, no trailing spaces. Because this is a data field all by itself, it has already been parsed out and no trailing spaces are needed. This is the Timestamp facility code assigned by the AAR QA committee. New axles will contain the OEM facility code. Newly converted axles will C305 Axle Nominal Diameter 5.5, 6, 6.0, 6.5, 7, contain the converter facility code. Newly reconditioned (plated) axles will contain the reconditioner’s facility code. 7.0................ This field must be included in the wheel set registration data sent to Railinc for wheel sets with new or converted axles. This field will be ignored on wheel C306 Axle Nominal Length 8, 9, 10, ................ sets with secondhand axles (condition code =2). C307 Axle AAR Condition Code 1 = new or converted R Time stamp to no less than seconds precision. You may choose to simply give 2 = second hand the UTC date and time (use T:00:00:00 if time is not available), but if there is 3 = reconditioned (plated a logical time available, it should be used. This is typically the time that the axle was finally inspected or when the axle was last wanded or some other useful C308 Axle S# and Heat ID 123123 ABCDEF attribute of your process. New axles, newly converted axles, and newly reconditioned (plated) axles will C309 Axle AAR Type RWS contain the timestamp from the OEM, converter, or reconditioner, respectively. This field must be included in the wheel set registration data sent to Railinc for all wheel sets. For wheel sets with secondhand axles, this field will be populated to the best of one’s ability (e.g., “1981-01-01T00:00:00” is acceptable if “81” is the only legible marking). R This field must be provided by the axle manufacturer or converter or reconditioner (plater), or be determined by the wheel shop for secondhand axles. This field must be included in the wheel set registration data sent to Railinc for all wheel sets. R This field must be provided by the axle manufacturer or converter or reconditioner (plater), or be determined by the wheel shop for secondhand axles. This field must be included in the wheel set registration data sent to Railinc for all wheel sets. R This field must be provided by the axle manufacturer or converter or reconditioner (plater), or be determined by the wheel shop for secondhand axles. This field must be included in the wheel set registration data sent to Railinc for all wheel sets. C In new axles, the axle serial number and heat ID shall be provided in a string with a single space between them (12+12 alphanumeric). This field must be included in the wheel set registration data sent to Railinc for all wheel sets with new axles. RWS is the only possible value for new wheel set or turned wheel set registration because black collar axles are no longer allowed to reenter service. The black collar axles are still in service and need to be available for field registration and for backfill. This field must be provided within the barcode of any axle label or be entered by the wheel shop for secondhand axles, and must be sent to Railinc for registration. F [S-920] 32 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX A Element ID Name Sample(s) Text On Label Full Description (XML tag) F, G, H ....... R = Required C = Conditional Axle grade of steel based upon heat treatment—per M-101 (F, G, and H currently)—previously called Axle classification. Axle Bar Code,(continued) This field must be provided by the axle manufacturer or converter or be determined by the wheel shop for secondhand axles, and must be included in C310 Axle Grade the wheel set registration data sent to Railinc for all wheel sets. C311 (currently required to be left E, F, F+ ........... This field must be provided within the barcode of any axle label or be entered blank) by the wheel shop for secondhand axles, and must be sent to Railinc for all wheel sets. C312 (currently required to be left blank) These are internal codes, but designed to be included/documented in the AAR standards. The format is a fixed format with the first four characters being the C313 Axle Body Design company code with leading spaces and the last four characters being digits with leading zeros. When used, the codes and their general meaning must be C314 Axle Plating communicated to the AAR so that conflicts do not arise. An example would be (currently required to be left that Company XXXX used code XXX1 on axles produced with a specific blank) plating process. It is meant to enable quality improvements that would otherwise be very difficult to implement or track. C315 AAR Extened Axle Codes 8AMS1234 This field, if provided by the axle manufacturer or converter, must be sent to IMPLEMENTED 07/2021 (currently required to be left Railinc for registration. blank) These are codes designed to support future requirements of the AAR C316 Axle Characteristics (Wheel 03190276 standards. The format is a fixed format with the first four characters being the shop Tracking) company code with leading spaces and the last four characters being digits with leading zeros. An example would be that Company XXXX would use code C317 Axle Dust Guard Size F, U, N 9XXX on axles with fully machined bodies and a defect-free designation. It is intended that this code enable tracking and support premium designations C318 Extended Seal Wear Ring Y/N that would otherwise be very difficult to implement or track. Required This field, if provided by the axle manufacturer or converter, must be sent to Railinc for registration. Wheel shop axle characteristics that are intended to be reported under the C316 are defined in Table 12.1. The field value is a string of eight digits that represent the concatenation of two four-digit strings. Each of the four-digit strings is coded as described in Fig. 12.3, with the first four representing the codes to be reported by a wheelshop (i.e., all characters intended to be tracked) and the second four representing the current state of the axle. The four digits must be padded with all necessary leading zeros. This field is for wheel shop tracking purposes only. This field is used to identify the type of backing ring required per MSRP H, M-934, Table 6.2. The axle dust guard size is to be captured as either F (fitted), U (universally fitted), or N (non-fitted). This field is used to identify any axle having a seal wear ring groove and requiring an extended seal wear ring. 04/2020 F [S-920] 33

APPENDIX B AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX B BOLSTER DATA GLOSSARY IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)SPSX1234567890 R = Required R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing C = ConditionalBolster Bar Codespaces and leading zeros are necessary because some company codes contain digits and this allows easy data parsing. This shall not be used in a n/a AAR Component ID (Bolster) combined field to input 14 bytes in order to avoid parsing issues that could lead to data integrity issues. companyCode Component ID Company SPSX Code 4 characters max, no trailing spaces. Because this is a data field all by itself, it has already been parsed out and no trailing spaces are needed. idNumber Component ID Number 1234567890 This field must be generated by the company manufacturing the casting. The Company Code must be included in the component registration data sent C401 Bolster AAR Foundry Facility PVLN to Railinc for all castings. Code 10 digits max, no leading zeros. Because this is a numeric field all by itself, C403 AAR Design Feature Code B5N03ESAS there is no need for adding leading zeros. This field must be generated by the company and be included in the C404 Bolster AAR ID B+1234 component registration data sent to Railinc for all components. C402 Bolster Cast Month 01 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. C417 Bolster Cast Year 12 This field must be included in the component registration data sent to Railinc for all new, reconditioned, and secondhand components. C405 Manufacturer’s 33842-10 Pattern Number or This field is commonly known as the “9 digit code” or “AAR Interchange code.” Details of the AAR Design Features Code are defined in MSRP Section S, B-10321-A Part II, Standard S-392 “Truck Design Drawings.” This data element is sometimes cast onto the bolster. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Hyphens should not be included. If this code is not available on the casting, it shall be added by the reconditioner per MSRP Section S, Specification M-214. Details of the AAR ID are cross referenced in MSRP Section S, Part II, Standard S-312, “Marking Diagram, Truck Bolster.” This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. If the AAR ID is available on the casting, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned and secondhand castings. Must be 2 digits for the cast month, with leading zeros. This data element is cast onto the bolster. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Must be 2 digits for the cast year, with leading zeros. This data element is cast onto the bolster. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Pattern number and format are defined by manufacturer, including any hyphens. The pattern number is the primary nomenclature for the casting’s design. This data element is cast onto the bolster. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. F [S-920] 34 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX B Element ID Name Sample(s) Text On Label Full Description (XML tag) 33842-10 R = Required C = Conditional Drawing Number and format are defined by manufacturer and includes any or hyphens. Bolster Bar Code (continued) D-13658 This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. This field is not required to C406 Manufacturer’s or be populated on reconditioned or secondhand castings. Drawing Number 013658 Drawing Number Revision is defined by manufacturer. This field may be blank C407 Manufacturer’s B if no revision is applicable. Drawing Number Revision BHK13031 The Serial Number is defined by manufacturer and is exclusive to a single C408 Bolster Serial Number component within the production month. This data element is cast onto the GBRX bolster. C409 Bolster Manufacturer Heat 2011-02-27 This field must be provided by the foundry and must be included in the IMPLEMENTED 07/2021 Number 1, 2, or 3 component registration data sent to Railinc for new castings. If the serial number is available on the casting, this field must be provided by the C410 Bolster Manufacturer Heat Y reconditioner and be included in the component registration data sent to Treat Load Number or Railinc for reconditioned and secondhand castings. N C411 Bolster Reconditioner AAR Y or N 10 characters max. The Heat Number is defined by manufacturer and is not Facility Code Y or N exclusive to a single component. It defines a foundry’s furnace load from which a group of components was poured. C413 Bolster Classification Date This field must be provided by the foundry and be included in the component C414 Bolster Condition Code registration data sent to Railinc for new castings. This field will not be populated on reconditioned or secondhand castings. C415 Pocket Wear Plate Installed The Heat Treat Load Number is defined by manufacturer and is not exclusive C416 Converted Bolster Flag to a single component. It defines a foundry’s grouping of components as they progress through the final heat treat process, establishing the casting’s C418 Increased Component Life mechanical properties. (ICL) This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. This field will not be populated 04/2020 on reconditioned or secondhand castings. 4 characters max, no leading spaces. This is the facility code assigned by the AAR’s QA committee. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand components. 10 character date stamp with format YYYY-MM-DD. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand castings. A new casting is one that has not yet been in service (Code=1). A secondhand casting is removed from service and meets the defined Secondhand Acceptance Requirements of MSRP Section S, Specification M-214 (Code=2). A reconditioned casting is removed from service and subsequently processed under MSRP M-214 at a reconditioner’s shop (Code=3). This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for all castings. Y if bolster has pocket wear plates installed in all positions; otherwise N. This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. If the attributes of the casting have been altered during reconditioning, which lead to a change in the AAR Design Features Code, then set this flag to Y(es). This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. For reconditioned bolsters 47 years or older, indicate Y if the bolster was reconditioned for Increased Component Life in accordance MSRP Section S, Specification M-214, or N if the bolster was not reconditioned for Increased Component Life. F [S-920] 35

APPENDIX C AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX C SIDE FRAME DATA GLOSSARY IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)SPSX1234567890 R = Required R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing C = ConditionalSide Frame Bar Codespaces and leading zeros are necessary because some company codes contain digits, and this allows easy data parsing. This shall not be used in a n/a AAR Component ID (Side combined field to input 14 bytes in order to avoid parsing issues that could lead Frame) to data integrity issues. companyCode Component ID Company SPSX 4 characters max, no trailing spaces. Because this is a data field all by itself, it Code has already been parsed out and no trailing spaces are needed. This field must be generated by the company manufacturing, reconditioning, or idNumber Component ID Number 1234567890 classifying the casting. The Company Code must be included in the component registration data sent C501 Side Frame AAR Foundy PVLN to Railinc for all components. Facility Code 10 digits max, no leading zeros. Because this is a numeric field all by itself, C503 AAR Design Features Code F7N01ANUA there is no need for adding leading zeros. This field must be generated by the company and be included in the C504 Side Frame AAR ID Code component registration data sent to Railinc for all components. C502 Side Frame Cast Month 01 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. C518 Side Frame Cast Year 12 This field must be included in the component registration data sent to Railinc for all new, reconditioned, and secondhand components. C505 Manufacturer’s N41811 Pattern Number or This field is commonly known as the “9 digit code” or “AAR Interchange code.” Details of the AAR Design Features Code are defined in MSRP Section S, B-13606 Part II, Standard S-392 “Truck Design Drawings.” This data element is sometimes cast onto the side frame. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Hyphens should not be included. If this code is not available on the casting, it shall be added by the reconditioner per MSRP Section S, Specification M-214. Details of the AAR ID are cross referenced in MSRP Section S, Part II, Standard S-314, “Marking Diagram, Truck Side Frame.” This field must be provided by the foundry and must be included in the component registration data sent to Railinc for new castings. If the AAR ID is available on the casting, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned and secondhand castings. Must be 2 digits for the cast month, with leading zeros. This data element is cast onto the side frame. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Must be 2 digits for the cast year, with leading zeros. This data element is cast onto the side frame. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Pattern number and format are defined by manufacturer, including any hyphens. The pattern number is the primary nomenclature for the casting’s design. This data element is cast onto the side frame. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. F [S-920] 36 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX C Element ID Name Sample(s) Text On Label Full Description (XML tag) 54601-J R = Required or C = Conditional Drawing number and format are defined by manufacturer, including any hyphens. D-13658 This field must be provided by the foundry and be included in the component Side Frame Bar Code (continued) or registration data sent to Railinc for new castings. This field is not required to be 013658 populated on reconditioned or secondhand castings. C506 Manufacturer’s B Drawing Number Drawing Number Revision is defined by manufacturer. This field may be blank if no BHK13031 revision is applicable. C507 Manufacturer’s Drawing Number Revision Y The Serial Number is defined by manufacturer and is exclusive to a single component or within a production month. This data element is cast onto the side frame. C508 Side Frame Serial Number N This field must be provided by the foundry/reconditioner and be included in the SPSX component registration data sent to Railinc for new castings. If the serial number is C509 Side Frame Manufacturer Heat 2011-02-27 available on the casting, this field must be provided by the reconditioner and be IMPLEMENTED 07/2021 Number 1, 2, or 3 included in the component registration data sent to Railinc for reconditioned and secondhand castings. C510 Side Frame Manufacturerocp 1, 2, 3, 4, or 5 Heat Treat Load Number 10 characters. The Heat Number is defined by manufacturer and is not exclusive to a Y or N single component. It defines a foundry’s furnace load from which a group of C515 Column Wear Plates Installed components was poured. C511 Side Frame Reconditioner AAR This field must be provided by the foundryand be included in the component registration data sent to Railinc for new castings.This field will not be populated on reconditioned or Facility Code secondhand castings. C513 Side Frame Classification Date C514 Side Frame Condition Code The Heat Treat Load Number is defined by manufacturer and is not exclusive to a single component. It defines a foundry’s grouping of components as they progress C516 Nominal Wheel Base through the final heat treat process, establishing the casting’s mechanical properties. C517 Button Count This field must be provided by the foundryand be included in the component registration C519 Increased Component Life (ICL) data sent to Railinc for new castings.This field will not be populated on reconditioned or secondhand castings. 04/2020 Y if side frame has column wear plates installed in all positions; otherwise N. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for all castings. 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand components. 10 character date stamp with format YYYY-MM-DD. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand castings. A new casting is one that has not yet been in service (Code=1). A secondhand casting is removed from service and meets the defined Secondhand Acceptance Requirements of MSRP Section S, Specification M-214 (Code=2). A reconditioned casting is removed from service and subsequently processed under MSRP M-214 at a reconditioner’s shop (Code=3). This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. Nominal distance between the pedestal centerlines (in inches). This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. A count of the “buttons” cast or welded on above the pedestal, indicating the actual variance from the nominal wheelbase as determined by gauging (per MSRP Section S, Part II, Standard S-378). This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. For reconditioned side frames 47 years or older, indicate Y if the side frame was reconditioned for Increased Component Life in accordance with MSRP Section S, Specification M-214, or N if the side frame was not reconditioned for Increased Component Life. F [S-920] 37

APPENDIX D AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX D COUPLER BODY DATA GLOSSARY IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)SPSX1234567890 R = Required R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing C = ConditionalCoupler Bar Codespaces and leading zeros are necessary because some company codes contain digits and this allows easy data parsing. This shall not be used in a n/a AAR Component ID combined field to input 14 bytes in order to avoid parsing issues that could lead (Coupler) to data integrity issues. companyCode Component ID Company SPSX 4 characters max, no trailing spaces. Because this is a data field all by itself, it Code has already been parsed out and no trailing spaces are needed. This field must be generated by the company manufacturing the casting. idNumber Component ID Number 1234567890 The Company Code must be included in the component registration data sent to Railinc for all components. C609 Coupler AAR Facility PVLN Code 1, 2 or 3 10 digits max, no leading zeros. Because this is a numeric field all by itself, there is no need for adding leading zeros. C601 Coupler Condition Code This field must be generated by the company and be included in the component registration data sent to Railinc for all components. C602 Coupler AAR Code Number EFH33B00B050SE 4 characters max, no leading spaces. This is the facility code assigned by the C603 Coupler Catalogue Number SE68DE AAR QA committee. This field must be included in the component registration data sent to Railinc for C604 Coupler Cast Month 01 all new, reconditioned, and secondhand components. C605 Coupler Cast Year 12 A new casting is one that has not yet been in service (Code=1). A secondhand casting is removed from service and meets the defined Secondhand C606 Coupler Serial Number 37 Acceptance Requirements of MSRP Section S, Specification M-212 (Code=2). A reconditioned casting is removed from service and subsequently processed under AAR M-212 at a reconditioner’s shop (Code=3). This field must be provided by the foundry/reconditioner and must be included in the component registration data sent to Railinc for all castings. 14 characters. Details of the AAR Code are defined in MSRP Section S, Standard S-211. This data element is not cast onto the coupler. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Hyphens should not be included. An AAR code that identifies equivalent coupler designs, independent of manufacturer, such as shank length, head design, and grade of steel. This field must be included in the component registration data sent to Railinc for all new, reconditioned, and secondhand components. Must be 2 digits for the cast month, with leading zeros. This data element is cast onto the coupler. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. Must be 2 digits for the cast year, with leading zeros. This data element is cast onto the coupler. This field must be provided by the foundry/reconditioner and be included in the component registration data sent to Railinc for new, reconditioned, and secondhand castings. The Serial Number is defined by manufacturer and is exclusive to up to two components within a production month. This data element is cast onto the coupler. This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. If the serial number is available on the casting, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned and secondhand castings. F [S-920] 38 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX D Element ID Name Sample(s) Text On Label Full Description (XML tag) R = Required 1 or 2 C = Conditional The Cavity Number is defined by manufacturer and differentiates between A or B couplers with the same serial number. This data element is cast onto the Coupler Bar Code (continued) coupler. This field must be provided by the foundry and be included in the component C607 Coupler Cavity Number registration data sent to Railinc for new castings. If the cavity number is available on the casting, this field must be provided by the reconditioner and C608 Coupler Conditional Y or N be included in the component registration data sent to Railinc for Approval Flag reconditioned and secondhand castings. C610 Coupler Heat Number Y(es) if the coupler is produced under conditional approval from the CSTCC. N(o) if production of coupler is fully approved. C611 Coupler Heat Treat Load IMPLEMENTED 07/2021 Number 10 characters. The Heat Number is defined by manufacturer and is not exclusive to a single component. It defines a foundry’s furnace load from C612 Coupler Reconditioner AAR SPSX which a group of components was poured. Facility Code 2011-02-27 This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. This field will not be populated C613 Coupler Classification Date on reconditioned or secondhand castings. C614 Reconditioned Coupler Heat The Heat Treat Load Number is defined by manufacturer and is not exclusive Treat Load Number to a single component. It defines a foundry’s grouping of components as they progress through the final heat treat process, establishing the casting’s C615 Reconditioner’s Tag Y or N mechanical properties. This field must be provided by the foundry and be included in the component registration data sent to Railinc for new castings. This field will not be populated on reconditioned or secondhand castings. 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand components. 10 character date stamp with format YYYY-MM-DD. This field must be included in the component registration data sent to Railinc for all reconditioned and secondhand castings. The Heat Treat Load Number is defined by reconditioner and is not exclusive to a single component. It defines grouping of components as they progress through the heat treat process, reestablishing the casting’s mechanical properties after any weld repairs. This field will be provided by the reconditioner and must be included in the component registration data sent to Railinc for reconditioned castings if heat treat is required by MSRP Section S, Specification M-212. This field will not be populated on new or secondhand castings. Y(es) if coupler has been restored and gauged according to M-212. 04/2020 F [S-920] 39

APPENDIX E AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX E EMERGENCY BRAKE VALVE PORTION DATA GLOSSARY IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)SPSX1234567890 R = Required R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing C = ConditionalEmergency Brake Valve Portion Bar Codespaces and leading zeros are necessary because some company codes contain digits and this allows easy data parsing. This shall not be used in a n/a AAR Component ID combined field to input 14 bytes in order to avoid parsing issues that could (Emergency) lead to data integrity issues. companyCode Component ID Company SPSX 4 characters max, no trailing spaces. Because this is a data field all by itself, Code it has already been parsed out and no trailing spaces are needed. This field must be generated by the company manufacturing the valve portion. idNumber Component ID Number 1234567890 The Company Code must be included in the component registration data sent to Railinc for all components. C701 Condition Code 1 or 3 10 digits max, no leading zeros. Because this is a numeric field all by itself, C702 AAR OEM/Recon Facility WAHO there is no need for adding leading zeros. Code This field must be generated by the company and be included in the component registration data sent to Railinc for all components. C703 Date Valve Tested YYYY-MM-DD A new valve portion is one that has not yet been in service (Code=1). A C704 Serial Number M44130069 reconditioned valve portion has been through overhaul at a reconditioner’s shop (Code=3). C705 Part Number 661520 This field must be provided by the OEM/reconditioner and must be included in the component registration data sent to Railinc for all valve portions. C706 MFG Configuration Code 008 4 characters max, no leading spaces. This is the facility code assigned by the C707 Valve Type ABDX AAR QA committee. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. 10 character date with format YYYY-MM-DD on which the valve portion was tested. This field must be included in the component registration data sent to Railinc for all new and reconditioned valve portions. The Serial Number is defined by manufacturer and is exclusive to the valve portion manufactured. This data element is available on the metal tag secured to the body. This field must be included in the component registration data sent to Railinc for new valve portions. If the serial number is available on the valve portion, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned valve portions. Partial serial numbers are not acceptable. The part number is defined by manufacturer and is exclusive to the valve portion type. This data element is available on the metal tag secured to the body. This field must be provided by the OEM/reconditioner and must be included in the component registration data sent to Railinc for all valve portions. The configuration code identifies components within the valve portion body. This field must be included in the component registration data sent to Railinc for new valve portions. If the MFG Configuration Code is available on the valve portion, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned valve portions. The Valve Type is the type of emergency portion. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. F [S-920] 40 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX F APPENDIX F SERVICE BRAKE VALVE PORTION DATA GLOSSARY Element ID Name Sample(s) Text On Label (XML tag) SPSX1234567890 R = Required C = Conditional Full Description Service Brake Valve Portion Bar Code R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing n/a AAR Component ID spaces and leading zeros are necessary because some company codes (Service) contain digits and this allows easy data parsing. This shall not be used in a combined field to input 14 bytes in order to avoid parsing issues that could companyCode Component ID Company SPSX lead to data integrity issues. Code 4 characters max, no trailing spaces. Because this is a data field all by itself, idNumber Component ID Number 1234567890 it has already been parsed out and no trailing spaces are needed. This field must be generated by the company manufacturing the valve portion. C801 Condition Code 1 or 3 The Company Code must be included in the component registration data sent IMPLEMENTED 07/2021 to Railinc for all components. C802 AAR OEM/Recon Facility WAHO Code 10 digits max, no leading zeros. Because this is a numeric field all by itself, there is no need for adding leading zeros. C803 Date Valve Tested YYYY-MM-DD This field must be generated by the company and be included in the component registration data sent to Railinc for all components. C804 Serial Number M44130069 A new valve portion is one that has not yet been in service (Code=1). A C805 Part Number 661520 reconditioned valve portion has been through overhaul at a reconditioner’s shop (Code=3). C806 MFG Configuration Code 008 This field must be provided by the OEM/reconditioner and must be included in the component registration data sent to Railinc for all valve portions. C807 Valve Type ABDX 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. 10 character date with format YYYY-MM-DD on which the valve portion was tested. This field must be included in the component registration data sent to Railinc for all new and reconditioned valve portions. The Serial Number is defined by manufacturer and is exclusive to the valve portion manufactured. This data element is available on the metal tag secured to the body. This field must be included in the component registration data sent to Railinc for new valve portions. If the serial number is available on the valve portion, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned valve portions. Partial serial numbers are not acceptable. The part number is defined by manufacturer and is exclusive to the valve portion type. This data element is available on the metal tag secured to the body. This field must be provided by the OEM/reconditioner and must be included in the component registration data sent to Railinc for all valve portions. The configuration code identifies components within the valve portion body. This field must be included in the component registration data sent to Railinc for new valve portions. If the MFG Configuration Code is available on the valve portion, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned valve portions. The Valve Type is the type of service portion. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. 04/2020 F [S-920] 41

APPENDIX G AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX G SLACK ADJUSTER DATA GLOSSARY IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag) R = Required C = ConditionalSlack Adjuster Bar Code n/a AAR Component ID (Slack SPSX1234567890 R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing Adjuster) spaces and leading zeros are necessary because some company codes SPSX contain digits and this allows easy data parsing. This shall not be used in a companyCode Component ID Company combined field to input 14 bytes in order to avoid parsing issues that could Code 1234567890 lead to data integrity issues. 1 or 3 idNumber Component ID Number 4 characters max, no trailing spaces. Because this is a data field all by itself, WACA it has already been parsed out and no trailing spaces are needed. C901 Condition Code 15 This field must be generated by the company manufacturing the slack 01 adjuster. The Company Code must be included in the component registration C902 AAR OEM/Recon Facility data sent to Railinc for all components. Code MM-YY R 10 digits max, no leading zeros. Because this is a numeric field all by itself, C903 Manufacturer Stamped Year there is no need to add leading zeros. C904 Manufacturer Stamped 2500DJ This field must be generated by the company and be included in the UN component registration data sent to Railinc for all components. Month C905 Reconditioned Date 661520 A new slack adjuster is one that has not yet been in service (Code=1). A C906 AAR Group A0 reconditioned slack adjuster has been through overhaul at a reconditioner's shop (Code=3). C907 OEM Model Number This field must be provided by the OEM/reconditioner and must be included in the component registration data sent to Railinc for all slack adjusters. C908 Manufacturer 4 characters max, no leading spaces. This is the facility code assigned by the C909 Serial Number AAR QA committee. C910 MFG Configuration Code This field must be included in the component registration data sent to Railinc for all new and reconditioned components. Must be 2 digits; a year is required for new slack adjusters. This field must be provided by the slack adjuster manufacturer and must be included in the slack adjuster registration data sent to Railinc. Must be 2 digits; a month is required for new slack adjusters. This field must be provided by the slack adjuster manufacturer and must be included in the slack adjuster registration data sent to Railinc. 5 character date stamp with format MM-YY. This field must be included in the component registration data sent to Railinc for all reconditioned slack adjusters. The AAR Group is the group that categorizes the slack adjuster per the AAR Field Manual Rule 8. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. The OEM Model Number is the model number that identifies the slack adjuster per the AAR Field Manual Rule 8. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. 2 characters, no leading spaces. This is the original manufacturer of the slack adjuster. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. The Serial Number is defined by manufacturer and reconditioner. This field must be included in the component registration data sent to Railinc for new and reconditioned slack adjusters. The configuration code identifies components within the slack adjuster body. This field must be included in the component registration data sent to Railinc for new slack adjusters manufacturered by New York Air Brake. If the MFG Configuration Code is available on the slack adjuster, this field must be provided by the reconditioner and be included in the component registration data sent to Railinc for reconditioned slack adjusters. F [S-920] 42 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX H APPENDIX H CUSHIONING UNIT DATA GLOSSARY Element ID Name Sample(s) Text On Label (XML tag) RAIL0123456789 R = Required C = Conditional Full Description Cushioning Unit Bar Code R 4 characters with trailing spaces + 10 digits with leading zeros. The trailing N/A AAR Component ID spaces and leading zeros are necessary because some codes contain digits (Cushioning Unit) and this allows easy data parsing. This shall not be used in a combined field to input 14 bytes in order to avoid parsing issues that could lead to data companyCode Component ID Company RAIL integrity issues. Code 4 characters max, no trailing spaces. Because this is a data field all by itself, it has already been parsed out and no trailing spaces are needed. idNumber Component ID Number 123456789 This field must be generated by the company manufacturing the cushioning D201 Condition Code 1, 2, or 3 unit. The Company Code must be included in the component registration data IMPLEMENTED 07/2021 sent to Railinc for all components D202 AAR OEM/Recon Facility AARQ 10 digits max, no leading zeros. Because this is a numeric field all by itself, Code 20 there is no need to add leading zeros. D203 Manufacture Year This field must be generated by the company and be included in the component registration data sent to Railinc for all components. D204 Manufacture Month 04 A new cushioning unit is one that has not yet been in service (Code=1). A secondhand cushioning unit is one that has previously been applied but is D205 Reconditioned Date MM-YY being applied or reapplied by the car owner or under car owner authority D206 Manufacturer KRE (Code=2). A reconditioned cushioning unit is one that has been through reconditioned per AAR Specification M-921-C (Code=3). This field must be provided by the OEM/Reconditioner and must be included in the component registration data sent to Railinc for all cushioning units. 4 characters max, no leading spaces. This is the facility code assigned by the AAR QA committee. This field must be included in the component registration data sent to Railinc for all new and reconditioned components Must be 2 digits for the year the device was manufactured (YY). This field must be provided by the manufacturer and must be included in the cushioning unit data sent to Railinc. Must be 2 digits for the month the device was manufactured (MM). This field must be provided by the manufacturer and must be included in the cushioning unit data sent to Railinc. 5 character date stamp with format MM-YY. This field must be provided by the reconditioner and must be included in the cushioning unit data sent to Railinc. 3 characters, no leading spaces. This is the original manufacturer of the cushioning unit. This field must be included in the component registration data sent to Railinc for all new and reconditioned components. 04/2020 F [S-920] 43

APPENDIX H AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)1234567 R = Required The Serial Number is defined by the manufacturer or reconditioner. This field C = ConditionalCushioning Unit Bar Code (continued)2/13 G-B B/Umust be included in the component registration data sent to Railinc for new and reconditioned cushioning units. D207 Serial Number The OEM Model Number is the model number that identifies the cushioning D208 OEM Model Number unit per the AAR Field Manual Rule 59. D209 AAR Specification M-921D This field must be included in the component registration data sent to Railinc D210 Travel Length 10 for all new and reconditioned components. 6 character alpha-numeric field indicating AAR Specification to which unit was manufactured or reconditioned. The maximum travel length, in inches, of the cushioning unit as manufacturer or reconditioned. F [S-920] 44 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX I APPENDIX I TANK CAR SAFETY RELIEF DEVICE DATA GLOSSARY Element ID Name Sample(s) Text On Label (XML tag) ABCD1234567890 R = Required O = Optional Pressure Relief Valve ABCD Full Description n/a AAR Component R AAR Component Identification (CID) is the combination of companyCode and Identification (CID) idNumber. 4 characters. Component ID Company Code is assigned by Railinc to the companyCode Component ID Company C4a, C4m, and C5 tank car facility. Because this is a data field all by itself, it Code has already been parsed out and no trailing spaces are needed. This field must be included in the component registration data sent to Railinc idNumber Component ID Number 1234567890 for all pressure relief valves. 10 digits max, no leading zeros. Because this is a numeric field all by itself, D101 PRV Condition Code 1 or 3 there is no need for the registering facility to add leading zeros. IMPLEMENTED 07/2021 The Component ID Number is generated and assigned by the C4a, C4m, or D102 AAR Tank Car Facility Code ZYWX C5 tank car facility. This field must be included in the component registration data sent to Railinc for all pressure relief valves. D103 Original Manufacturer ABCD (MFG) Facility Code O 1 numeric character max, no leading spaces. D104 PRV Base Model Number A-3700 Series Code 1 - A new pressure relief valve that has been assembled or manufactured and qualified by a C4a / C4m tank car facility having service equipment code \"S\". Code 3 - A pressure relief valve that has been maintained and qualified by a C5 tank car facility having service equipment code \"S\". This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. R 4 alpha characters max, no leading spaces. The unique identifier assigned by the AAR to a C4a, C4m, or C5 tank car facility performing the activity for this registration event. This is the M-1003 QA Code and is synonymous with M-1002 Station Stencil. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 4 alpha characters max, no leading spaces. Preserves the unique identifier assigned by the AAR to the original C4a or C4m tank car facility. This is the M-1003 QA Code and is synonymous with M-1002 Station Stencil. This data element is stamped or etched onto the body name plate. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 14 characters max (alpha, numeric, & symbols), no leading spaces. The model number is generated and defined by the C4a or C4m tank car facility that correlates to the AAR design approval. This data element is stamped or etched onto the body name plate. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 04/2020 F [S-920] 45

APPENDIX I AAR Manual of Standards and Recommended Practices S-920 Sensors IMPLEMENTED 07/2021Element IDName Sample(s) Full Description Text On Label(XML tag)1234567 R = Required 30 characters max (alpha, numeric, & symbols) no leading spaces. The part O = OptionalPressure Relief Valve (continued)number is generated and defined by the C4a or C4m tank car facility and identifies valve attributes based on an assembly bill of materials. Attributes D105 Manufacturer Part Number may include but are not limited to: material(s) of construction, set pressure, (Original) seal material(s), and mounting configuration. D106 Body Material Aluminum This data element may be stamped or etched onto the body name plate. D107 PRV Serial Number 1234567890 This field is optional and may only be reported by the C4a or C4m tank car facility for inclusion with component registration data sent to Railinc. D108 PRV Built Month MM 32 characters max (alpha, numeric) no leading spaces. The valve body material is assigned by the C4a or C4m tank car facility and correlates to the D109 PRV Built Year YYYY AAR design approval. D110 PRV Set Pressure (Design 280.5 This field must be reported by the C4a or C4m tank car facility and be Nominal) included in the component registration data sent to Railinc for all pressure relief valves. 16 characters max, no leading spaces. If the PRV was manufactured after December 31, 2003, a Serial Number will be defined and generated by the C4a or C4m tank car facility. This data element is stamped or etched onto the body name plate. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. This is a 2 character date stamp with format MM. If PRV was manufactured prior to December 31, 2003 (before serialization), the month and year of manufacture shall be entered in lieu of a serial number. This data is stamped or etched on the body nameplate. This field must be reported by the C5 tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. This is a 4 character date stamp with format YYYY. If PRV was manufactured prior to December 31, 2003 (before serialization), the month and year of manufacture shall be entered in lieu of a serial number. This data is stamped or etched on the body nameplate. This field must be reported by the C5 tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 5 numeric characters max (including decimal), no leading spaces. This data element is stamped or etched onto the body name plate based on the AAR design approval. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. F [S-920] 46 04/2020

AAR Manual of Standards and Recommended Practices S-920 Sensors APPENDIX I Element ID Name Sample(s) Text On Label (XML tag) PRD-181109A R = Required O = Optional Full Description Pressure Relief Valve (continued) O 11 characters max, alpha-numeric, no leading spaces. D111 AAR Approval Number The Approval Number (original or renewal) is assigned by the AAR and is valid for 10 years. This must be the current approval number as recorded on either the AAR form 4-3 or 4-7. D112 AAR Service Trial Number ST-1234 This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 8 characters max, alpha-numeric, no leading spaces. Blank unless component is under service trial. The Service Trial number is assigned by the AAR for an in-service evaluation of a PRV for a defined period of time. This must be the service trial number as recorded on either the AAR forms 4-3, 4-4, 4-6 and/or 4-7. D113 PRV Qualification Date (As YYYY-MM-DD For only those pressure relief valves assigned to an AAR service trial, this IMPLEMENTED 07/2021 Tested) field must be reported by the C4a or C4m tank car facility and be included in the component registration data sent to Railinc. O 10 character date stamp with format YYYY-MM-DD on which the PRV was physically tested and qualified by the C4a, C4m or C5 tank car facility. D114 PRV Start-to-Discharge 231.75 This field must be reported by the tank car facility and be included in the Pressure (As Tested) component registration data sent to Railinc for all pressure relief valves. 6 numeric characters max, no leading spaces. This element reports the measured start-to-discharge pressure of the PRV tested and must be within the tolerance for the given set pressure in 49 CFR Part 179.15(b)(5). D115 PRV Vapor Tight Pressure 180.9 This field must be reported by the tank car facility and be included in the (As Tested) component registration data sent to Railinc for all pressure relief valves. 6 numeric characters max, no leading spaces. This element reports the measured vapor-tight pressure of the PRV tested and must be within the tolerance for the given set pressure. D116 O-Ring/Seal Material Viton A This field must be reported by the tank car facility and be included in the Applied (As Tested) component registration data sent to Railinc for all pressure relief valves. R 25 alpha-numeric characters max, no leading spaces. This element describes the material composition / type of the new elastomeric seals applied. D117 AAR Group RESERVED This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 2 character max, alpha-numeric, no trailing spaces. Category assigned by AAR based on the design approval of the PRV. This field must be reported by the tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. D118 Certifier ID 0123456789ABCDEFGHIJ 20 characters max, alpha-numeric in any order, no leading spaces. The individual at the facility performing the test to the pressure relief valve and who certifies the test is in accord with the federal regulations and the AAR Section C-III Specifications for Tank Cars (M-1002). This field must be reported by the C4a, C4m, and C5 tank car facility and be included in the component registration data sent to Railinc for all pressure relief valves. 04/2020 F [S-920] 47

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