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Flight Standards Service

Draft Advisory Circulars (ACs) Open for Comment

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Document Title: AC 120-77A, Maintenance and Alteration Data Contained in an Air Carrier Manual Under § 43.13(c)
Summary: This AC recommends acceptable methods by which air carriers and commercial operators, operating under 14 CFR part 121; part 129, § 129.14; and part 135, § 135.411(a)(2), apply the special provisions of 14 CFR part 43, § 43.13(c). This AC provides one means, but not the only means, of ensuring that the contemplated maintenance, alteration, or continue-in-service condition is in compliance with applicable regulations and existing policy.

Title 14 of the Code of Federal Regulations (14 CFR)

  • Part 3, General Requirements
  • Part 23, Airworthiness Standards: Normal Category Airplanes
  • Part 25, Airworthiness Standards: Transport Category Airplanes
  • Part 27, Airworthiness Standards: Normal Category Rotorcraft
  • Part 29, Airworthiness Standards: Transport Category Rotorcraft
  • Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration
  • Part 121, Operating Requirements: Domestic, Flag, and Supplemental Operations
  • Part 129, Operations: Foreign Air Carriers and Foreign Operators of U.S.-Registered Aircraft Engaged In Common Carriage
  • Part 135, Operating Requirements: Commuter and On Demand Operations and Rules Governing Persons On Board Such Aircraft.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Comments Due: December 1, 2021
How to Comment: Deliver comments by mail or hand to:

Christopher Lewis
600 Maryland Ave SW
Suite 610E
Washington, DC 20024

Email comments to:
Email Comments

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