AC 20-33B

Advisory circular · Technical Information Regarding Civil Aeronautics Manuals 1, 3, 4a, 4b, 5, 6, 7, 8, 9, 13, and 14

Approved
May 1, 1975
Last reviewed
January 11, 2017
Family
AC 20-33 · 1 version
Revision
B
14 CFR parts
21

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

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AC NO:

DEPARTMENT OF TRANSPORTATION

FEDERAL AVIATION ADMINISTRATION INFORMATION REGARDING CIVIL AERONAUTICSSUBJECT: 5, 6, 1� PURPOSE. This circular is to advise the public that such policy information as is contained in Civil Aeronautics Manuals (CAMS) 1, 3, 5, 6, 7, 9, and may be used in conjunction with specific sections of the Federal Aviation Regulations which correspond with the sections of the Civil Air Regulations to which the policies are applicable, upon recodification effective February CAM 8 may be used in conjunction with FAR FAR and FAR for restricted category certification of small agricultural airplanes only.

2� CANCELLATION. AC No. dated is cancelled. The reference to CAM 8 has been reinstated for small agricultural airplanes.

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a. Civil Aeronautics Manual policies provide detailed technical information on acceptable methods of complying with the Such policies are for the guidance of the public and are not mandatory.

b. covering the certification of products should not be discarded by interested persons upon recodification, because the rules contained therein, and accompanying policies, will continue to apply to products which have been certificated thereunder.

CO Policies applicable to sections of the Federal Aviation Regulations will be contained in the future Advisory Circular issuances, which update and replace the CAM materials.

Director, Flight Standards Service Initiated by:

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