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U.S. Department of Transportation Federal Aviation Administration 800 Independence Ave., Washington, D.C. 20591 S.W.
Official Penalty ,Business for Private Use $300
Advisory circular · Maintenance Review Board Procedures
A newer version is currentThis is a historical version. AC 121-22D is the version in force, approved May 31, 2024.
- Approved
- March 7, 1997
- Last reviewed
- August 28, 2024
- Cancels
- AC121-22
- Cancelled by
- AC121-22B
- Family
- AC 121-22 · 4 versions
- Revision
- A
- 14 CFR parts
- 21, 25, 27, 29, 33, 35, 121, 135
Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.
Versions of AC 121-22
AC 121-22DMaintenance Review Boards, Maintenance Type Boards, and Original Equipment Manufacturer/Type Certificate Holder Recommended Maintenance ProceduresAC 121-22CHistoricalMaintenance Review Boards, Maintenance Type Boards, and OEM/TCH Recommended Maintenance ProceduresAC 121-22BHistoricalMaintenance Review Board Report Maintenance Type Board, and OEM/TCH Inspection Program Procedures
AC 121-22AHistoricalMaintenance Review Board Procedures
ADs that cite this AC · 0
No AD in this release cites this AC