Is AD 05-21338 a recurring Airworthiness Directive?

No — AD 05-21338 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 05-21338 apply to?

AD 05-21338 applies to Aerospatiale — models ATR72. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 05-21338

one-time

AD 05-21338 · 2005-10-28 · airframe

Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Aerospatiale Model ATR42 and ATR72 airplanes. This AD requires a one- time inspection to determine the part number or markings of the fuel quality indicator (FQI) and replacement of any FQI having an incorrect part number. This AD results from a report that an FQI having an incorrect part number was installed on a Model ATR72 airplane. We are issuing this AD to ensure that a correct FQI is installed. An incorrect FQI could result in fuel starvation to the engine and consequent engine shutdown during flight.

Which aircraft AD 05-21338 applies to

MakesAerospatiale

ModelsATR72

having an incorrect part number was installed

Whether AD 05-21338 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 05-21338 complied with on your aircraft?

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.