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Section K Part II - Locomotive Electronics and Train Consist Systems Architecture - PDF (Electronic) Additionally, an AAR Circular Letter subscription is required as this is the vehicle used for the distribution of all new and revised standards. Circulars are issued at least 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. Subscription to Circular Letters of the AAR Technical Services division is available in electronic format (online access via AAR’s Web page at http://aarcirculars.aar.org).
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This manual uses a 3" binder - not included
Currently, this product is only offered as an online subscription for the entire series of K-volumes. Please see On-Line Section K Subscription