Skip to page content

USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

Search Results

Number, title, description, or office

Advisory Circulars (ACs) search results
Number Title Status Office Date
43-11 Reciprocating Engine Overhaul Terminology and Standards - Including Change 1

This advisory circular (AC) discusses engine overhaul terminology and standards used in the aviation industry.

Active AFS-340 1976-04-07
43-12A Preventive Maintenance

This advisory circular (AC) provides information concerning preventive maintenance,including who may perform it, the standards of performance applicable to it, authority for approval for return to service, and the applicable recording requirements.

Active AFS-340 1983-10-28