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Circular OT-5 K Information

The Association of American Railroads (AAR) has issued a revised AAR Circular OT-5 K “Rules Governing Assignment of Reporting Marks, Mechanical Designations and Application for the Use of Private Equipment.”

This Circular – replacing AAR Circular OT-5 J – was effective January 1, 2009.

 

Key changes in AAR Circular OT-5 K from Circular OT-5 J include:

  • The language has been simplified and any redundancy has been eliminated.
  • The new Circular OT-5 K requires that requests for loading authority be filed electronically using the Railinc internet web-based system that was created to facilitate this process.
    • It is the shipper’s responsibility to file loading requests with the originating railroad utilizing the Railinc system (described in attachments below). 
    • Additional information on AAR Circular OT-5 K can be found at www.railinc.com.
  •  For the first time, loading authorizations are required for tank cars under this AAR Circular.
    •  For the one year period, January 1, 2009 through December 31, 2009, applications for authorization to load certified tank cars may be submitted as prescribed in AAR Circular OT-5 K.
    • Beginning January 1, 2010, applications for authorization to load certified tank cars must be submitted as prescribed in AAR Circular OT-5 K.

  

If you have any questions regarding these changes, please contact your GATX Customer Service Representative or John Gleeson, Supervisor, Transportation Services at 312-621-6456 or john.gleeson@gatx.com.

 

Below are the documents related to AAR Circular OT-5 K, available in pdf format.  For Acrobat Reader software for pdfs, go to  http://get.adobe.com/reader/.