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United States Department of Transportation United States Department of Transportation

AC 20-176 - Design Approval Holder Best Practices for Service Bulletins Related to Airworthiness Directives (Cancelled)

Document Information

Number
20-176
Title
Design Approval Holder Best Practices for Service Bulletins Related to Airworthiness Directives
Date cancelled
2014-06-16
Cancellation notes
AC 20-176A
Date issued
2011-12-19
Office of Primary Responsibility
AIR-110
Description

This advisory circular (AC) presents various best practices for design approval holders (DAHs) of aircraft, aircraft engines, propellers, and appliances when drafting service bulletins (SBs) related to an airworthiness directive (AD). This AC also provides information and guidance on avoiding overlapping and conflicting actions in SBs, ex parté communication, alternative methods of compliance (AMOCs), and maintaining airworthiness of AD-mandated design changes.

Content