Is AD 2001-02-04 a recurring Airworthiness Directive?

No — AD 2001-02-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-02-04 apply to?

AD 2001-02-04 applies to Pilatus. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-02-04

one-time

Official AD 2001-02-04 · FR doc 01-2002 · 2001-01-29 · 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 all Pilatus Aircraft LTD (Pilatus) Model PC-6 airplanes that are equipped with a certain stabilizer trim actuator. This AD requires you to inspect the lower lug of the actuator for cracks, damage, or distortion; verify that the staked bearing is correctly installed in the bore of the lug; and repair any cracked, damaged, or distorted parts and reassemble any incorrectly installed staked bearing, 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 detect and correct damage, distortion, or cracks in the lower lug assembly, which could result in failure of the lower lug. Such failure could lead to loss of the stabilizer trim actuator with consequent loss of control of the airplane.

Which aircraft AD 2001-02-04 applies to

MakesPilatus

Applies to each airplane identified in paragraph (a) of this AD (specific affected models not included in this excerpt); compliance per Pilatus Service Bulletin No. 178, dated September 29, 1999; related Swiss AD HB 99-507, dated October 1, 1999.

Whether AD 2001-02-04 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 2001-02-04 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.