Is AD 99-19-32 a recurring Airworthiness Directive?

No — AD 99-19-32 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-19-32 apply to?

AD 99-19-32 applies to Pilatus Aircraft Ltd. — models PC-12. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-19-32

one-time

Official AD 99-19-32 · FR doc 99-24088 · 1999-09-17 · 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 applies to certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC- 12/45 airplanes. This AD requires inspecting all flap actuator internal gear systems to assure that correct end-play and backlash measurements exist, and accomplishing any corrective adjustments 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 prevent premature wear of the internal gear system caused by excessive backlash in the flight control flap actuators, which could eventually result in loss of actuator output with possible reduced or loss of airplane control.

Which aircraft AD 99-19-32 applies to

MakesPilatus Aircraft Ltd.

ModelsPC-12

Applies to Pilatus PC-12 airplanes. Prevents premature wear of the internal gear system caused by excessive backlash in the flight control flap actuators, which could eventually result in loss of actuator output and reduced/loss of airplane control. Requires, within 50 hours TIS, inspecting all flap actuator internal gear systems for correct end-play and backlash per Pilatus Service Bulletin No. 27-005, dated November 18, 1998, and correcting adjustments as necessary; no person may install an uninspected/unadjusted flap actuator as of the effective date.

Whether AD 99-19-32 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 99-19-32 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.