In response to an ARSA request, the FAA will review agency policy and guidance regarding part identification when more than one number is applied to a part at production.

In a Dec. 6, 2011 letter, FAA Aircraft Maintenance Division Manager Steven Douglas stated that the FAA, “[shares ARSA’s] concern that the presence of multiple part numbers may cause confusion when maintaining such parts and interfere with recordkeeping.”

The Agency plans to review “affected FAA policy and guidance and revise them as necessary,” including Order 8130.21,Procedures for Completion and Use of Authorized Release Certificate.