Circulars
Circulars are issued several times monthly and include industry letter ballots and results, arbitration decisions, notification of rules and standards revisions, industry early warning and maintenance advisories, and other information related to mechanical rules and standards.
Circulars are a fee-based service provided by Transportation Technology Center Inc. in Pueblo, Colorado. This company is a wholly-owned subsidiary of the AAR.
Click here for Circulars Login
If you need further assistance with access to circulars, contact Kathy Pacheco-Trujillo at 719-584-0538.