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United States Department of Transportation United States Department of Transportation

AC 20-176A - Service Bulletins Related to Airworthiness Directives and Indicating FAA Approval on Service Documents

Document Information

Number
20-176A
Title
Service Bulletins Related to Airworthiness Directives and Indicating FAA Approval on Service Documents
Status
Active
Date issued
2014-06-16
Office of Primary Responsibility
AIR-140
Description

This advisory circular (AC) presents best practices for drafting service bulletins (SB) related to an airworthiness directive (AD). This AC also provides information and guidance on ex parté communication and alternative methods of compliance (AMOC), as well as means for avoiding overlapping and conflicting actions in SBs and maintaining airworthiness of AD-mandated design changes. This revision, AC 20-176A, includes guidance for indicating FAA approval on a service document.

Content