Is AD 2002-21-08 a recurring Airworthiness Directive?

No — AD 2002-21-08 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2002-21-08 apply to?

AD 2002-21-08 applies to Pilatus — models PC-6. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2002-21-08

one-time

Official AD 2002-21-08 · FR doc 02-26589 · 2002-10-21 · airframe

Airworthiness Directives; Pilatus Aircraft Ltd. Model PC-6 Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that applies to certain Pilatus Aircraft Ltd. (Pilatus) Model PC-6 airplanes. This AD requires you to inspect the aileron assembly for correct configuration and modify as necessary. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to correct improper aileron assembly configuration, which could result in failure of the aileron mass balance weight. Such failure could lead to loss of control of the airplane.

Which aircraft AD 2002-21-08 applies to

MakesPilatus

ModelsPC-6

Specific serial/registration applicability (paragraph (a)) not present in retrieved text. Actions per Pilatus Service Bulletin No. 62B (May 1967) and Pilatus PC-6 Service Bulletin No. 57-001 (December 20, 2001).

Whether AD 2002-21-08 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 2002-21-08 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.