| 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 |
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