Is AD 2001-25-10 a recurring Airworthiness Directive?

No — AD 2001-25-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-25-10 apply to?

AD 2001-25-10 applies to Pilatus — models PC-12. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-25-10

one-time

Official AD 2001-25-10 · FR doc 01-31102 · 2001-12-21 · airframe

Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that supersedes Airworthiness Directive (AD) 99-19-32, which applies to certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. AD 99-19-32 currently requires you to inspect the flap actuator internal gear system for correct end-play and backlash measurements and accomplish any corrective adjustments, as necessary. Pilatus has identified modifications for the flap system and designed and manufactured a new flap control and warning unit (FCWU) that permits the flap power drive-unit circuit breaker to close during flight. This AD requires you to modify the flap control wiring and install a flap power drive-unit field control panel. The actions specified by this AD are intended to allow the flap power drive-unit circuit breaker to close during flight and prevent current surges in the flap control system. If the pilot cannot close the circuit breaker during flight, the flight control and warning unit (FCWU) would not sense a worn actuator. Current surges in the flap control system could decrease the electrical life of the flap power drive-unit motor contactor. Both conditions have the potential for flap system failure with consequent reduced or loss of control of the airplane.

Which aircraft AD 2001-25-10 applies to

MakesPilatus

ModelsPC-12

Serial-number list not present in this excerpt. Compliance is via multiple Pilatus PC-12 Service Bulletins (No. 27-008 Rev 2/Rev 1, No. 27-012, No. 27-011 Rev 1) and associated PC-12 Maintenance Manual Temporary Revisions/pages.

Whether AD 2001-25-10 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 2001-25-10 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.