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Advisory Circulars (ACs)

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Number, title, description, or office

Advisory Circulars (ACs) search results
Number Title Status Office Date
20-125 Water in Aviation Fuels

Alerts the aviation community to the potential hazards of water in aviation fuels. Additionally, it outlines recommended procedures to prevent, detect, and eliminate water in the fuel systems of aircraft.

Active AFS-340 1997-08-12
20-106 Aircraft Inspection for the General Aviation Aircraft Owner

Describes techniques used in aircraft inspections. Designed to familiarize owner, pilots, student mechanics, and others with inspection procedures, it does NOT qualify an individual to make airworthiness determinations.

Active AFS-340 1978-04-01
20-122A Anti-misfueling Devices: Their Availability and Use - Change 1

Includes information relating to the Society of Automotive Engineers (SAE) standard dimensions for fueling ports now being incorporated during new aircraft production by all General Aviation Manufacturer’s Association member companies.

Active AFS-340 1991-01-29