2021 Interchange Rule Revisions - thecrma.org

AAR Interchange Rules Revisions Update For 2021

Field Manual of the AAR Interchange Rules

Note that July 2020 changes are not included in this presentation, nor are many changes that were strictly editorial in nature.

ASSOCIATION OF AMERICAN RAILROADS1 2/8/2021

Rule 1 Care of Freight Cars


Revised Rule 1.2.a(3):

(3) Repairs to empty cars not to be subsequently loaded by repairing line, including cars where owner’s disposition has been requested via DDCT, except repairs outlined in Section 2.b, as provided in this rule, must be confined to the minimum necessary for safety of trainmen and the safe movement of car to home line shop.

Reference: C-13667, 10/28/20




(7) Running repairs as provided in these rules that are owner’s responsibility may be made by a repair facility acting as the railroad’s agent without requesting owner’s disposition. Repairs must be completed while on handling line railroad or at a facility served by the handling line railroad. Railroad is responsible for repairs to car. Railroad or its running repair agent, as listed in the Running Repair Agent category in FindUs.Rail, will furnish billing car repair data record to car owner. Repairs must be submitted per Office Manual Rule 112.G.

Reference: C-13727, 12/31/20




(3) Standard wheel defect gage No. 34401 or 34401A or Combined wheel gage.

Reference: C-13727, 12/31/20


(7) E coupler contour condemning limit gage (5 5⁄16 inch) No. 25623-1, Side A.

Reference: C-13712, 11/25/20

Rule 3 Testing of Air Brakes


Revised Rule 3.B Chart A Items 4, 5 and 7:

4) Car with wheel thermal cracks or condemnable built up tread or slid flat meeting the criteria of Rule 41.A.

5) When a car is on shop or repair track, wheels with noncondemnable any built-up tread or slid flat unless known to be caused by a hand brake left applied.

7) Empty/Load valve or Empty/Load sensor armrenewed.

Reference: C-13670, 10/28/20 and C-13712, 11/25/20



Revised Rule 3.B Chart A Items 8 and 10:

8) Service portion, emergency portion, 4-pressure receiver or access plate, or AB pipe bracket renewed

10) Brake cylinder cleaned repaired or renewed, brake cylinder pipe repaired or renewed, brake cylinder hose renewed, brake cylinder relay valve or Modulating valve renewed. If BC tap is installed, use Brake Cylinder Leakage Test. If BC tap is not installed, apply approved brake cylinder pressure tap. (test only if repaired on repair track)

Reference C-13668, 10/28/20



Revised Rule 3.B.13-14:

13. During accelerated application, valve operation of the NYAB DB-20 emergency portion, air may be observed escaping from the interface of the side cover and body. This is air which is being released to exhaust by the operation of the accelerated application valve and does not constitute a condemnable leak is acceptable (see Rule 4, Figures 4.12 and 4.13).

14. During release valve operation, an intermittent escape of air may be noted around the bottom cover of the release valve. During the initial stages of a brake application, an intermittent escape of air may be noted around the bottom cover of the service portion. This is air that is being released to exhaust by operation of the valve portion and does not constitute a condemnable leak is acceptable (see Rule 4, Figures 4.12 and 4.13).

Reference C-13712, 11/25/20



Editorially Revised Rule 3 Figure 3.7:

Various related changes not included in this presentation.



Revised Rule 3.E.2, 8 and 9:

2. Charges for truck mounted piston travel adjustments are not permitted in conjunction with wheel, single car air brake test, brake beam, slack adjuster, slack adjuster actuator/control rod, or brake cylinder renewal and/or brake cylinder cleaning reconditioning on same truck. Reference C-13688, 10/28/20

8. If evidence is available that a non-condemnable built up tread or slid flat were caused by hand brakes having been left on, do not test the car unless it meets the criteria in Chart A.

9. Report why made 24 when test described by Job Code 1144, 1145, or 1146 is performed for noncondemnable due to wheels discovered with built up tread or slid flat. not meeting Rule 41.A Cause For Attention limits. Do not report why mades Why Made Codes 12, 20 or 21 for this cause for attention.

Reference C-13712, 11/25/20



Revised Rule 3.E.13:

13.When a car is inspected and tested per Chart A line 14,a. Report the SCABT associated with a LORF-NCF cause for attention using Why Made Code 1A when no other Why Made Code applies.b. The applicable LORF-NCF EHMS alert must be closed once the inspection and the SCABT are complete, within 24 hours.

Reference C-13663, 10/28/20



Revised Rule 3.F Job Codes 1150, 1151 and 1152:

**1150 GROUP A—PISTON TRAVEL ADJUSTMENTAdjustment of one truck set for truck mounted brakes without slack adjuster. Not chargeable with wheel, brake beam or brake cylinder renewal and/or brake cylinder cleaningreconditioning on same truck. Additional charges per Section E may be made if necessary to safely accomplish repairs. Not billable in conjunction with single car air brake test.(Condition Code 0)(Why Made Code 28)

NOTE: Same change made to Job Code 1151 and 1152

Reference C-13663, 10/28/20

Rule 4 Air Brakes Valves and Parts


Revised Rule 4.A.3:3. As Noted Below:a. Service and/or emergency portion control valves with a manufacture or recondition date (whichever is later) of 13 years may be renewed, and if over 14 years must be renewed for over age cause on a car if:

(1) The car will be part of a travels in unit train in service carryingcoal, grain, High Hazardous Flammable Class 3 CommodityUnit Train (HHFUT), or Toxic Inhalation Hazard (TIH/PIH)service; and

(a) Note: See Appendix A for unit train definition(2) Unit train will be operating on Operates any part of its routein territory above the 37th parallel for any length of timewithin the date range of November 1st thru April 1st.

(a) Note: See Appendix A for 37th parallel territories(a) Car does not need to be operating north of the 37th parallel at the time of renewal (b) Renewal may occur at any point throughout the year

Reference: C-13709, 11/23/20



Revised Rule 4 Figure 4.12:

Reference: C-13712, 11/25/20



Inserted New Rule 4.E.28 and Revise Chart:28. Shown below is a classification chart for empty/load devices. See identification chart in Figure 4.20.

Reference: C-13675, 11/2/20



Revised Rule 4.E Figure 20, Group 2:

Reference: C-13670, 10/28/20



Removed Rule 4.F Job Code 1328:1328 ASCTD 4-PRESSURE ACCESS PLATE for DB-60Any type, Complete less Receiver assembly.(Condition Codes 1, 3, 9)(Why Made Codes 02, 04, 09, 11, 15, 25, 27, 31, 32, 35)

Reference: C-13669, 10/28/20

Inserted Job Code 1407: 1407 EMPTY/LOAD SENSOR ARM (Group 2 ELLCON NATIONAL and NYAB)Sensor arm only(Condition Code 1)(Why Made Codes 01, 02, 03, 04, 05, 06)

Reference: C-13670, 10/28/20

Rule 5 Air Brake Hoses, Hose Supports, and Trainlines


Inserted New Rule 5.B Correct Repair Chart for Angle Cock/End Cock:

Reference C-13665, 10/28/20



Inserted New Rule 5.E.16:16. When car is on a shop or repair track, it is preferred that the defective angle cock/end cock be replaced per Job Code 1160 and/or 1162. Angle cock rebuild kits that include internal seals, O-rings and ball assembly may be used in field or on repair track using Job Code 1169 provided that the casing is in good condition and free of contaminants. Angle cock/end cock handles and top caps can be replaced in field only, per Job Code 1161. After replacement, verify function of the angle cock and continuity of the trainline.

Reference C-13665, 10/28/20



Revise Rule 5.F Job Codes 1165 and 1167:1165 AIR HOSE SUPPORT COMPLETE—NON-METALLICAny approved type.For labor attention to adjust air hose height as required per Section B, “CorrectRepair Chart for End Hose Height Adjustment,” where no material is renewed,bill using Condition Code 9 and Why Made Code 19. Use only Why MadeCodes 02, 03, 09, 25 with Condition Codes 1, 2. When renewing or applyingthe support with a 5.A.1.i. defect, use Why Made Code 04 and ConditionCodes 1 or 2.(Condition Codes 1, 2, 9)(Why Made Codes 02, 03, 04, 09, 19, 25, 45)

1167 AIR HOSE SUPPORT COMPLETE—METALLICAny approved type.For labor attention to adjust air hose height as required per Section B, “CorrectRepair Chart for End Hose Height Adjustment,” where no material is renewed,bill using Condition Code 9 and Why Made Code 19. Use only Why MadeCodes 02, 03, 09, 25 with Condition Codes 1, 2. When renewing or applyingthe support with a 5.A.1.i. defect, use Why Made Code 04 and ConditionCodes 1 or 2.(Condition Codes 1, 2, 9)(Why Made Codes 02, 03, 04, 09, 19, 25, 45)

Reference C-13680, 11/4/20



Inserted New Rule 5.F Job Code 1169:

1169 ANGLE COCK REBUILD KIT - INCLUDES SEALS O-RINGSAND BALL ASSEMBLYAny AAR approved(Condition Code 1)(Why made codes 01, 02, 15, 47)

Reference C-13665, 10/28/20

Rule 6 End Hose Arrangement Performance and Angle Cock Placement


Revised Rule 6.F.6:

6. Why Made Code01 = Worn out02 = Broken03 = Missing05 = Bent06 = Bent beyond repair09 = Account repairs15 = Leaking24 = Attention required25 = Owner’s request27 = Initial application31 = Fire or heat damage per Rule 9542 = Improperly located or applied45 = Wrong size component

Rule 7 Brake Beams, Hangers, Brackets, Wear Plates and Brake Connection Pins, Hanger Pins, or Bolts


Revised Rule 7.A.1.b and Figure 7.1:

Reference C-13712, 11/25/20



Revised Rule 7.A.1.i:

i. Cracks anywhere in the brake beam. A single crack in wear platesattached to the end extensions is not cause for replacement unlessthe crack is in the wearing surface of the wear plate that is in contactwith the brake beam liner. See Figure 7.2 for an example of a noncondemnable crack not requiring attention.

Reference C-13712, 11/25/20

Revised Rule 7.B.1:

1. The following unit brake beams are approved per AAR Standard S-344-89 for application to all cars. Reconditioning of only these brake beams ispermitted:

a. No. 18: Certificate No.’s 103, 111, 134, 138, 200, 203, 205, 211, 214,216, 217, 218, 219, 220, 225.b. No. 24: Certificate No.’s 114, 118, 136, 137, 137L, 201, 204, 212, 213,215, 221, 222, 223, 224.c. No. 28: Certificate No. 90.

Reference C-13681, 11/4/20



Revised Rule 7.B.7:

7.B.7 It is permissible to replace the condemnable brake head only on beams so designed. Replacement of brake heads due to Section A Cause for Attention, is only allowable on beams so designed. Beams which have replaceable brake heads are marked with Certificate No.’s 217, 218, 219, 221, 222, and 223.

Reference C-13712, 11/25/20

Inserted New Rule 7.E.11:

11. Labor to remove and/or replace TMX/UBX brake system components should be billed per Job Code 4468 Rule 75.

Reference C-13664, 10/28/20



Revised Rule 7.F Job Code 1670:1670 BRAKE BEAM UNIT TYPE—TMX/UBX BRAKE SYSTEM TMX, UBX TYPE(DOES NOT INCLUDE CYLINDER AND/OR PISTON ASSEMBLY)R&R of truck brake cylinder (Job Code 4468 1484) is applicable whenreplacing brake beam with mounted cylinder.(Condition Codes 1, 3)(Why Made Codes 01, 02, 03, 05, 08, 18, 25, 40, 41)

Reference C-13664, 10/28/20

Inserted New Rule 7.F Job Code 4468:4468 TMX/UBX BRAKE SYSTEM - LABORTo be used only when removing and/or replacing TMX/UBX brake systemcylinder or actuator, any size per truck location. Defective material must bereported separately per Rule 72 to obtain charge.(Condition Code 0)(Why Made Codes 09, 25)

Reference C-13664, 10/28/20

Rule 8 Automatic Slack Adjuster


Inserted New Rule 8.B.5 and Figure 8.1 (moved from 8.E.4):

5. All slack adjuster replacements/transfers must be reported by the repairingparty along with the applied slack adjuster AAR Component ID to Railinc(see Office Manual Rule 93). Reporting should be within 24 hours of therepair event. The AAR Component ID can be found on the slack adjustertag or may be obtained from Railinc for any slack adjuster produced afterApril 1, 2016. For any slack adjuster being transferred or for slack adjustersproduced prior to April 1, 2016, the AAR Component ID may be generated/acquired by performing a field registration at http://www.railinc.com.

Reference C-13682, 11/4/20

Rule 9 Air Brakes Cylinders and Parts


Revised Rule 9.C.1:1. Reconditioning of air brake cylinders must be in accordance with the applicable AAR specification, and/or OEM instruction pamphlets.

Revised Rule 9.E.2:2. Submerged valvular components must be replaced. Submerged brake cylinder housings must be cleaned and pistons replaced., and oOther submerged air brake components must be handled in accordance with Instruction Leaflet No. 2391, Sup. 1, Repair Track Maintenance—Freight Brake Equipments “AB” Type. Report Job Code 1116 for cleaning. Reference: C-13668, 10/28/20



Inserted New Rule 9.E.10:10. Labor to remove and/or replace TMX/UBX brake system components should be billed per Job Code 4468 Rule 75.

Inserted New Rule 9.F Job Code 4468:4468 TMX/UBX BRAKE SYSTEM - LABORTo be used only when removing and/or replacing TMX/UBX brake system cylinder or actuator, any size per truck location. Defective material must be reported separately per Rule 72 to obtain charge.(Condition Code 0)(Why Made Codes 09, 25)

Reference: C-13668, 10/28/20



Revised Rule 9.F Job Code 1476:1476 TRUCK BRAKE CYLINDER HOUSINGAny size. WABCOPAC/NYCOPAC(Condition Codes 1, 2, 3, 9)(Why Made Codes 02, 03, 09, 26, 31, 32, 35, 45)

Reference: C-13683, 11/4/20

Rule 12 Brake Shoes and Shoe Keys


Revised Rule 12.A.1:A. Cause for Attention

1. At Any Time a.1. Brake Shoe

1) a. Missing.2) b. Broken and part missing per Figure 12.1.3) c. Cast Iron Type with wear metal broken through and sliding onreinforced back.4) d. Cast Iron Type worn to the extent that 1⁄2 inch or less remains.5) e. Composition Type worn to 3⁄8 inch or less thickness including liningand backing plate.6) f. Wrong, not standard to car.

b. 2. Brake Shoe Key1) a. Missing.2) b. Broken.3) c. Worn out.4) d. Damaged in removal.

Reference C-13684, 11/4/20

Rule 12 Brake Shoes and Shoe Keys


Revised Rule 12.B.6 and Figure 12.1:

Reference C-13684, 11/4/20

Rule 13 Hand Brakes – Geared and Non-geared


Revised Rule 13.A.1:A. Cause for Attention

1. At Any Timea. 1. Inoperative due to mechanical cause.b. 2. Bent, broken, missing.c. 3. Broken or worn out vertical chain.d. 4. Wrong—Not standard to car.e. 5. If hand wheel clearance or clearance from the grip portion of the operatinglever is less than 4 inches.f. 6. If release lever clearance is less than 2 inches.

Reference C-13684, 11/4/20

Rule 13 Hand Brakes – Geared and Non-geared


Revised Rule 13.B Correct Repair Charts Groups Q and R:

Reference C-13685, 11/4/20

Rule 16 Couplers, Type E and Parts


Revised Rule 16.A.1.i:i. Knuckles found broken or with cracks are condemnable excluding cracks anywhere along the length of the flag hole as shown by the marked region in Figure 16.4. Determination shall be by visual inspection and/or by utilizing non-destructive testing as defined in MSRP M-220 shall be scrapped.

Revised Rule 16.A.2Figure 16.5:

Reference: C-13712, 11/25/20



Revised Rule 16.A.2.e Figure 16.8:

Reference: C-13712, 11/25/20



Revised Rule 16.C.1 Figure 16.10:

Reference: C-13712, 11/25/20



Inserted New Rule 16.E.25 and Figure 16.16:

E. 25. A Grade C coupler that has been heat treated to Grade E properties during reconditioning is identified with a steel plate marked “CE”. The CE plate is located on the guard arm side of the horn and will be visible when looking at the AAR identification. See Figure 16.16 for example of the CE plate.

FIGURE 16.16

Reference: C-13686, 11/4/20

Rule 17 Couplers, Type E/F and Parts


Revised Rule 17.A.1.m: m. Knuckles found broken or with cracks are condemnable excludingcracks anywhere along the length of the flag hole as shown by themarked region in Figure 17.1. Determination shall be by visualinspection and/or utilizing non-destructive testing defined inMSRP M-220.

Revised Rule 17.B Correct Repair Chart:

NOTE: Same change made in multiple places in Rule 17 & 18

Reference: C-13712, 11/25/20

Rule 17 Couplers, Type E/F and Parts


Revised Rule 17.E.4.c:c. Apply a small bead dime size amount (1⁄4 inch to 3⁄8 inch diameter) of lubricant on across the carrier on each side of the coupler shank. The coupler need not be moved. Reference: C-13687, 11/4/20

Inserted New Rule 17.E.10:10. A Grade C coupler that has been heat treated to Grade E properties during reconditioning is identified with a steel plate marked “CE”. The CE plate is located on the guard arm side of the horn and will be visible when looking at the AAR identification. See Figure 16.16 for example of the CE plate. Reference: C-13686, 11/4/20

Rule 18 Couplers, Type F and Parts


Revised Rule 18.A.1.l: l. Knuckles found broken or with cracks are condemnable excludingcracks anywhere along the length of the flag hole as shown by themarked region in Figure 18.3. Determination shall be by visualinspection and/or utilizing non-destructive testing defined inMSRP M-220.

Revised Rule 18.A.2.bFigure 18.4:

Reference: C-13712, 11/25/20



Revised Rule 18.A.2.k Figure 18.8:

Reference: C-13712, 11/25/20



Inserted New Rule 18.E.20:

20. A Grade C coupler that has been heat treated to Grade E properties during reconditioning is identified with a steel plate marked “CE”. The CE plate is located on the guard arm side of the horn and will be visible when looking at the AAR identification. See Figure 16.16 for example of the CE plate.

Reference: C-13686, 11/4/20

Rule 21 Draft Gears, Carriers and Followers


Revised Rule 21:

Rule 22 Uncoupling Levers and Support Brackets


Revised Rule 22.E.6.b:b. For all cars under 60 feet with EOC or up to 20 inch COC Cushioning. Uncoupling levers listed under paragraph a. above may be substituted for those in the following table. Does not apply to boxcars with combination of EOC 15” or less and E/F couplers of 25” or less coupler shank length.Requires MSRP M-961 lever support clevis.

Revised Rule 22.E.6.c:c. For 60 to 89 foot flat cars with EOC or COC Cushioning. For boxcars with combination of EOC 15” or less and E/F couplers of 25” or less coupler shank length.Requires AAR Specification M-961 lever support clevis.

Reference C-13688, 11/4/20

Rule 23 Articulated Connectors


Revised Rule 23.A.c(7) Figure 23.5:

Reference C-13712, 11/25/20

Rule 36 Roller Bearings


Revised Rule 36.E.14:14. When a wheel set is removed for Why Made Codes 50 or 95 and the adapter is found to meet the criteria of Rule 37.A becondemnable per Rule 37, the adapter must be secured to the wheel set and returned to the wheelshop.

Inserted New Rule 36.E.22 and Figure 36.4:22. Bearings equipped with the Brenco Poly-Shroud – if the outboard or inboard Poly-Shroud has become cracked, broken, or missing, it is not cause for wheelset removal. (Figure 36.4)

Figure 36.4

Reference: C-13689, 11/4/20

Rule 37 Roller Bearings Adapters


Revised Rule 37.B.5 Figure 37.3: Added ASF Adapter Plus

Reference: C-13689, 11/4/20



Revised Rule 37.E.7.a Figure 37.4:

Reference:C-13712, 11/25/20



Revised Rule 37.E.7.b Figure 37.5:

Reference:C-13712, 11/25/20



Revised Rule 37.E.7.d Figure 37.6:

Reference:C-13712, 11/25/20

Rule 41 Wheels


Rewrote Rule 41:

See Circular C-13697, issued 11/6/20 for details.

Rule 46 Truck System Performance


Revised Rule 46.A.2.a(1):

2. When Car Is on Shop or Repair Track for Any Reasona. Friction casting (wedge) rise height measured by an approved method exceeding the limits indicated in Figures 46.12 through 46.17 or manufacturer's recommendations.

(1) In the event no individual condemnablecomponents exceed wear limits are visible,contact car owner for disposition.(2) Wedge rise gage handles illustrated in the figures are optional.

Reference C-13715, 11/25/20



Revised Rule 46.B.7 & 8:7. Condemnable trucks detected by a Truck Hunting Detector must have thefollowing addressed by the car owner.

a. Trucks to be inspected and repaired to AAR Field Manualrequirements.b. Condemnable friction wedges that exceed wear limits are to be replaced.c. When equipped with constant contact side bearings, resilient orspring elements are to be replaced.d. Roller or block type side bearings are to be replaced with AAR M-948approved long travel constant contact side bearings.e. Side bearing adjustment or component replacement, see Rule 62.

8. Condemnable trucks detected by a wayside Truck Performance Detectormust have the following addressed by the car owner.

a. Car body to be lifted and the center bowl cleaned of any debris andre-lubricated (lubrication not required in bolster bowls equipped withnon-metallic wear liners), see Rule 47.b. Trucks to be inspected and repaired to AAR Field Manualrequirements.c. Condemnable friction wedges that exceed wear limits are to be replaced.d. Condemnable side bearing set-up heights to be adjusted per Rule 62.e. Roller or block type side bearings are to be replaced with AAR M-948approved long travel constant contact side bearings.f. Side bearing adjustment or component replacement see Rule 62.

Reference C-13712, 11/25/20



Revised Rule 46.E.2 & 4:

2. Disposition from owner must be obtained for cars with a truck exceeding condemning limits detected by a hunting detector. The car owner is to be advised that home shop disposition is for exceeding the truck hunting index. Use DDCT Incident Type Rule 1 for truck hunting to request shop disposition from owner.

4. Disposition from owner must be obtained for cars with a truck exceeding condemning limits detected by a truck performance detector. The car owner is to be advised that home shop disposition is for exceeding the truck performance criteria. Use DDCT Incident Type Rule 1 for truck performance to request shop disposition from owner.

Reference C-13712, 11/25/20

Rule 47 Truck Bolsters


Revised Rule 47.A.1.d and i:d. Bolster friction casting slope wear plate missing (except by design), broken, loose, or worn through.

i. Bolster friction casting slope wear plate worn 50% or more from new when truck is disassembled for other cause.

Revised Rule 47.A.1.i:e. Replacement of pocket bolster friction casting slopewear plates and inserts. Repair of existing pocket bolster friction casting slope wear plate or insert welds. If bolster friction casting pocket was not originally equipped with slope wear plates, they may not be applied. Sloped pockets Bolster friction pocket may not be restored.

Reference C-13691, 11/4/20

Rule 50 Truck Springs And Snubbers



1. Secondhand coil truck springs applied to cars in interchange service must not have permanent set exceeding 1⁄4 inch below the new nominal free height. If springs are to be shot peened, measurement for minimumcondemning free height must be made prior to shot peening.

Reference C-13712, 11/25/20

Rule 57 Center Sills, Draft Sills, and Coupler Carriers


Revised Rule 57:3. Definitions and terminology used in this Rule:

Fracture: Complete separation of material extending through the entirecross section of the plate.Crack: A separation of material extending partially but not necessarilycompletely through the cross section of the plate.Buckle: A smoothly shaped ellipsoidal or circular depression of the platenot extending to the edges.Gouge: A groove or pit in surface of plate

Reference: C-13692, 11/4/20

Rule 59 Cushioned Underframe Devices


Inserted New Rule 59.B.15 and Figure 59.7 (moved from E.9):

B.15. Effective April 1, 2021, all end-of-car cushion unit replacements/transfers must be reported by the repairing party along with the applied cushion unit AAR Component ID to Railinc (see Office Manual Rule 93). Reporting should be within 24 hours of the repair or transfer event. The AAR Component ID may be found on the cushion unit housing or may be obtained from Railinc for any cushion unit manufactured or reconditioned after December 31, 2020. For any cushion unit manufactured before 2021 or being transferred to another car or to the opposite end of the same car, the AAR Component ID may be generated/acquired by performing a field registration at http://www.railinc.com.

Reference C-13682, 11/4/20

Rule 59 Cushioned Underframe Devices


Insert New Rule 59.B.14.e:

e. Scribe a second mark on the coupler shank, at the striker. The distance between the two marks is the free slack. Condemnable free slack greater than 2 ½ inches requires the coupler to be removed from the car and coupler, yoke, and coupler retaining feature (draft key or pin) gaged for wear.

Reference: C-13712, 11/25/20

Rule 62 Truck Side Bearings


Replaced Rule 62.A.1 Figure 62.1:



Replaced Rule 62.A.1.g(1)(a):

Reference C-13712, 11/25/20




Reference C-13712, 11/25/20



Replaced Rule 62.A.2.a:

Reference C-13712, 11/25/20

Rule 64 Tie Down And Load Restraining Devices



1. For condemning limits of chains, cables, and straps, please reference AAR Open Top Loading Rules Manual Section 1, Rule 22, for specific criteria.

Reference C-13712, 11/25/20

Rule 66 Reflective Sheeting


Revised Rule 66.B.3-4:

3. Sheeting may be applied/renewed as follows:a. Apply new sheeting over defective sheeting.b. Remove defective sheeting and apply new sheeting.c. Apply new sheeting adjacent to defective sheeting, which must be covered or otherwise painted over.

4. Defective sheeting must be removed, covered, or otherwise painted over.

Rule 66 Reflective Sheeting


Revised Rule 66.E.10.e - Initial Inspection #2:

2. While maintaining a uniform distance from the car/locomotive as you move down the side (15 ft is preferred but not required), examine each individual sheet with a light source and determine if comparison is needed. Use of a light source will allow the inspector to verify if the cleaning was sufficient and to identify the following:

• Sheeting with condemnable degradation that need not be further evaluated with a panel; that is obviously degraded (no further evaluation is needed), or• Sheeting that is obviously good that need not be further evaluated (no further evaluation is needed), or• Sheeting that is suspect and needs further evaluation with a panel

Reference C-13712, 11/25/20

Rule 67 Miscellaneous Instructions


Revised Rule 67.6:

Added:Job Code 4468 TMX/UBX Brake System - Labor

Revised Rule 67.8:

Added:Job Code 4468 TMX/UBX Brake System - Labor

Reference C-13683, 11/4/20

Rule 75 Miscellaneous Labor


Revised Rule 75.5:Added:

Job Code 4468 TMX/UBX Brake System - Labor

Inserted New Rule 75.F Job Code 4468:4468 TMX/UBX BRAKE SYSTEM - LABORTo be used only when removing and/or replacing TMX/UBX brake system cylinder or actuator, any size per truck location. Defective material must be reported separately per Rule 72 to obtain charge.(Condition Code 0)(Why Made Codes 09, 25)

Reference C-13683, 11/4/20

Rule 75 Miscellaneous Labor


Revised Rule 75.5:4456 TRAIN DELAY ALLOWANCE—LINE OF ROADUse this job code only to bill a train delay allowance only when caused by a car on line of road with an AAR condemnable defect that causes the train delay as specified in Rule 91. Charge for jacking car on line-of-road, if required, must be billed per Job Code 4459. This job code, when applicable, should be billed on the same Billing Repair Card with the repair charges for the AAR condemnabledefect(s) that causes the service interruption.(Condition Code 0)(Why Made Code 09)

4457 SETOUT/PICKUP ALLOWANCE—LINE OF ROADUse this job code only to bill the switching of a car out and back into a train when the car was the cause of a train delay caused by an AAR condemnabledefect as specified in Rule 91. This job code can only be billed in conjunction with Job Code 4456. Charge for jacking car on line-of-road, if required, must be billed per Job Code 4459. This job code, when applicable, should be billed on the same Billing Repair Card with the repair charges for the AAR condemnabledefect(s) that causes the service interruption.(Condition Code 0)(Why Made Codes 09)

Reference C-13712, 11/25/20

Rule 80 Markings


Revised Rule 80.B.1:

B.1. Apply markings on clean, dry surface. Either decals or stencils can be used for repair. Decals must meet the requirements of AAR Specification M-947.

Rule 81 Wheels


Rewrote Rule 81:

See Circular C-13674, issued 11/2/20 for details.

Rule 83 Preparation of Original Record of Repair and Billing Repair Data


Rule 83.15:15. Codes to be used on Billing Repair Data for repairs made or serviceperformed:

1 = New material applied2 = Secondhand material applied3 = Reconditioned or recertified material applied7 = Periodic or service attention. Includes the following:

a. Vacantb. Single car testing of air brakesc. Cleaning of brake cylinder, B-1 Quick Service Valvesd. Lubricatione. Servicing mechanical refrigeration unitsf. Vacantg. All wheels applied

Reference: C-13668, 10/28/20

Rule 83 Preparation of Original Record of Repair and Billing Repair Data


Rule 83.17 Why Made Codes:

Removed Why Made Code 72:

72 = Rim spread

Rule 91 Service Interruption


Revised Rule 91.1-2:1. This Rule provides for a service interruption allowance to the handling linerailroad for costs associated with train delays caused by an AARCause For Attention condition condemnable defect that causes a traindelay on line of road. The AAR Cause For Attention conditioncondemnable defect that causes the delay may be repaired at the delaylocation or a setout location. The repair setout location could be on line ofroad or at a terminal

2. Train delay allowance job code is not allowed when:a. A train is within the yard limits of the departure terminal.b. Causing condition is a non-billable item.c. Causing condition is a handling line defect.d. Causing condition is an end air hose failure.e. Causing condition is an end air hose separation.f. Causing condition is a broken knuckle or knuckle pin.g. The handling line, at its discretion, slows the train speed to move thecar safely to terminal without setout.h. Causing condition had been identified at AAR Cause For Attentioncondemnable level by an Early Warning, Maintenance Advisory orEHMS alert prior to the line of road failure. (Documentation orreference to the specific alert must be provided by car owner whenbilling exception is taken.)

Reference C-13712, 11/25/20

Rule 120 AAR Rule Compliance And Enforcement


Revised Rule 120.B.1.a:

a. If a car owner has been billed for the replacement of noncondemnable parts that do not meet Cause for Attention criteria, the handling line must provide Counter Billing Authority.

Reference: C-13712, 11/25/20

Appendix A (Field and Office Manuals)


Revised Appendix A Definitions:

Bilateral Agreements: Agreements entered into to deviate from the rules between or among two or more subscribers. The ability to use these agreements to opt out of the AAR interchange rules for purposes such as specifying points where repairs are to be made, or specifying repair time limits, or defining specific replacement parts, or Cause for Attention condemning limits for such parts, specifying different labor rates or material charges or addressing other issues otherwise covered by the AAR Interchange Rules will be the province of the respective subscribers.

Service Interruption: A train delay that is caused by a specific AAR Cause for Attention condition condemnable defect that causes a train delay on the line of road.

Service Metal (wheels): Usable metal remaining on a wheel above the Cause for Attention condemning limit. See AAR Office Manual Rule 41.

Why Made Code (WM): Two-character alphanumeric code used to designate the reason repairs were made or services performed. See AAR Rule 88.

Appendix A (Field and Office Manuals)


Inserted New Appendix A Definitions:

Gouge: An indentation or groove in the surface.

Buckle: A smooth oval shaped depression or protrusion of the plate.

Deleted Appendix A Definition:

Condemnable: Any condition warranting inspection, repair, or testing of a freight car asspecified in any section of the Interchange Rules.

Appendix B


Revise Appendix B.E.20:E20. Bills must be presented within 1 year from last day of month in which service was performed.

o Effective January 1, 2022 detail Sources BP and OR must be billed within 6 months from the date of repair. Example: For repairs made in January, the bill must be received by the MLPB participants no later than the August Data Exchange (the date in August that the detail source data supporting the invoice is available).

E21. In the event of wage increase, retroactive bills may be made but must be presented within 1 year of date that retroactive increases are known, accompanied by proper documentation.

o Effective January 1, 2022 in the event of wage increase, retroactive bills may be made but must be presented within 6 months of date that retroactive increases are known, accompanied by proper documentation.

Reference: C-13666, 10/28/20

Appendix B


Revise Appendix B Job Codes 6002-6003:

6002 PRE-TRIP BI-LEVELRemoval of ice, snow, debris, obstructions from all decks. Lift and lowergrating for debris removal. Inspect all components of the rack structure formechanical defects. Inspect, replace, reposition, or apply chocks. *Material forchock replacement is to be charged under Job Codes 6050–6058 6057. Labor only.(Condition Code 0)(Why Made Code 24)

6003 PRE-TRIP TRI-LEVELRemoval of ice, snow, debris, obstructions from all decks. If equipped, lift andlower grating for debris removal. Inspect all components of the rack structurefor mechanical defects. Inspect, replace, reposition, or apply chocks. *Materialfor chock replacement is to be charged under Job Codes 6050–6058 6057. Laboronly.(Condition Code 0)(Why Made Code 24)

Office Manual of the AAR Interchange Rules


Note that most editorial changes are not included in this presentation.

Rule 81 Tank and Tank Car Repairs


Replaced Rule 81:For service equipment that requires registration per M-1002 Appendix A paragraph 6.0, the C6i or C6r tank car facility must associate the service equipment to the tank car by reporting the required data into the AAR Component Registry. Refer to the Umler Component Registry User Guide for the required data and detailed instruction on how to report the associated service equipment to the tank car. Reporting shall be submitted prior to the tank car being placed into service.

Reference C-13705, 11/18/20

Rule 88 Mechanical Requirements for Acceptance


Revised Rule 88.C.3.c(2)(a):

Reference C-13707, 11/18/20

Rule 107 Handling of Damaged or Destroyed Equipment


Inserted New Rule 107 Exhibit IV Note (4):

NOTE:(1) Tank cars with separate built dates for tank and underframe shall have depreciation computed separately.(2) Additions and Betterments reproduction value shall be added to the reproduction value of the car and shall be depreciated according to the Additions and Betterments chart below. If the A&B are damaged in the same calendar year installed, then the reproduction value of the A&B equals the original cost of the A&B.(3) A nonintegrated rack is considered a separate unit regardless of ownership.(4) When multiple rebuilds have occurred, the most recent rebuild date will determine the depreciation factor.

Reference C-13677, 11/3/20

Rule 112 Car Repair Billing


Inserted New Rule 112.E.1.c:1. The initial invoicing of car repairs for:

a. Detail Sources BR and GB must be billed within 6 months from the date of repair. Example: For repairs made in January, the bill must be received by the billed party, as defined in Rule 112.H.2, no later than the August Data Exchange (the date in August that the detail source data supporting the invoice is available).b. Detail Sources DC, DE, DM, and MA must be billed within 6 months from the date defined for each detail source per Rule 112 (see above example).c. For repair dates January 1, 2021 and greater, Detail Sources JD and JI must be billed within 6 months from the date defined for each detail source per Rule 112 (see above example).d. All other Detail Sources must be billed within 12 months from the date defined for each detail source per Rule 112. Example: For repairs made in January, the bill must be received by the billed party, as defined in Rule 112.H.2, no later than the February Data Exchange (the date in February that the detail source data supporting the invoice is available) of the following year.

Reference C-13679, 11/4/2020



Inserted New Rule 112.G.13.a-b:13. Running repairs, as provided in these Rules, which are owner’s responsibility, may be made by a repair facility acting as the railroad’s agent without requesting owner’s disposition. Repairs must be completed while on handling line or at a facility served by the handling line railroad. Railroad is responsible for repairs to car. Railroad or its running repair agent, as listed in the Running Repair Agent category in FindUs.Rail, will furnish billing information in accordance with Rule 112.a. If the railroad performed the repairs, the railroad must furnish billing information to the car owner for those repairs.b. Effective July 2021, if the running repair agent performed the repairs on behalf of the railroad, the running repair agent must furnish billing information to the car owner for those repairs per Appendix P of the CRB Procedures Manual.

Reference C-13708, 11/18/20



Revised Rule 112.H.4.k-m:

Reference C-13678, 11/3/20

Rule 120 AAR Rule Compliance and Enforcement


Inserted New Rule 120.A.4.b:

4. In conducting inspections and investigations, the AAR may examine, wherever located:

a. Repairs to foreign and system cars, including the sampling of components which have been removed;b. Damaged car information related to Rule 95 and Rule 107, including all car numbers involved;c. Car repair billing records, system car repair records and record keeping practices; andd. Records pertaining to the acquisition or disposal of freight car components.

Reference C-13706, 11/18/20

Labor Rates/Cost Factors/Service Fees


The following rates/fees became effective on January 1, 2021:

Hourly Labor Rate: $130.66 Cost Factor (Rule 107): 201 (static) EHMC/EHMS Fees:

Railroads $1,933.99 per billion revenue ton miles Private Car Owners $0.05 per car (static)

Technical Services User Fee: $2.20 per car (static) DDCT Car Owner Fee: $0.92 per car (static) Car Repair Billing Fee: $0.75 per car (static) Intermodal User Fee: $0.50 per intermodal equipment

semiannually (static)

AAR Interchange Rules Revisions


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2021 Interchange Rule Revisions - thecrma.org

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