AAR Technical Services

Technical Services Working

Arbitration & Rules

Asset Health Strategy

Brake Systems

Car Repair Billing

Coupling System & Truck Castings

Damage Prevention & Freight Claim

Equipment Engineering

Equipment Health Monitoring



Locomotive Repair Billing & Interchange Rules

Open Top Loading Rules

Quality Assurance Committee

Specially Equipped Freight Car

Wheels, Axles, Bearings & Lubrication

Equipment Engineering Committee

This committee develops and maintains design and operation standards for freight cars and their components. It also serves as the oversight committee for the operations of the AAR's Braking Systems Committee, Wheels, Axles, Bearings & Lubrication Committee, Coupling System & Truck Castings Committee, and Specially Equipped Freight Car Committee. The EEC Committee Manager can answer questions concerning design and construction of freight cars, increased gross rail load, technical certification of new car builders, freight car performance issues, extended service cars, freight car rebuilds and modifications, and draft gear/cushion units. The EEC also has responsibility for Rule 88 compliance (including inspections and review of structural analysis).


Jon Hannafious

Senior Manager, Equipment Engineering Committee

Transportation Technology Center, Inc

55500 DOT Road Pueblo, CO 81001

Phone: 719-584-0682 | FAX: 719-585-1895 | email:jon_hannafious@aar.com


AAR Member Railroads

CP (Chair)
CSX (Vice Chair)





Associate Members


Progress Rail



Field Manual

RULE 21 Draft Gears, Carriers and Followers
RULE 46 Truck System Performance
RULE 50 Truck Springs
RULE 53 Metal/Fiberglass
RULE 57 Center Sills
RULE 58 Side Sills
RULE 59 Cushioned Underframe Devices
RULE 60 Body Center Plates
RULE 61 Body Side Bearings
RULE 62 Truck Side Bearings
RULE 66 Reflective Sheeting
RULE 73 Trough Hatch Covers
RULE 77 Door and Door Parts
RULE 80 Painting and Stenciling
RULE 88 Mechanical Requirements for Acceptance

Manual of Standards and Recommend Practices

Section B Couplers and Freight Car Draft Components
Section C Car Construction Fundamentals and Details
Section C Part II Design, Fabrication, and Construction of Freight Cars
Section D Trucks and Truck Details
Section H Part III Lubrication (Shop) Manual
Section L Lettering and Marking of Cars


Coupler Retention Installation Procedures

SKC2397D E-G Style Application

SKC2904A E-10 & 15 Style Application

SKC3729A Freightmaster Type E - M, SN & KN Style Application

SKC3730A Freightmaster Type E - HD, & SR Style Application

SKC3731A Freightsaver Type E15H Style Application

SKC3732A Freightsaver Type E15H Style Application

SKC3733A Freightmaster Type F - M Style Application

SKC3734A Freightmaster Type F - SN Style Application

SKC3735A Freightmaster Type F - HD & AR Style Application

SKC3737A Freightmaster Type F - KNU Yoke Style Application

SKC3738A Freightmaster Type F - KN Style Application

SKC3766A E-10 & 15 GR Style Application

Strato Floating Yoke Components

Rule 59 Cushion Unit Installation (30mb)