Airworthiness Directive 01-18018
recurringAirworthiness Directives; Aerospatiale Model ATR42-200, -300, -320, and -500 Series Airplanes, and Model ATR72 Series Airplanes
What this AD requires
This amendment adopts a new airworthiness directive (AD), applicable to certain Aerospatiale Model ATR42-200, -300, -320, and - 500 series airplanes and Model ATR72 series airplanes, that requires temporarily revising the Airplane Flight Manual (AFM) to add tests of the engine fire protection system and conducting those tests prior to each flight. This amendment also requires replacement of defective engine fire handles with serviceable fire handles, which terminates the revision of the AFM and the repetitive tests of the engine fire protection system. These actions are necessary to prevent intermittent improper functioning of the engine fire handles, due to a machining defect of the control shaft bore guide, which could result in malfunction of the trigger (squib), and failure to activate one of the two engine fire extinguishers. This action is intended to address the identified unsafe condition.
Which aircraft AD 01-18018 applies to
Whether AD 01-18018 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.