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Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
20-176A Service Bulletins Related to Airworthiness Directives and Indicating FAA Approval on Service Documents

This advisory circular (AC) presents best practices for drafting service bulletins (SB) related to an airworthiness directive (AD).

Active AIR-140 2014-06-16