Airworthiness Directive 2000-21-14
one-timeAirworthiness 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 you to perform a one-time inspection for abrasion damage, distortion, and proper clearance of the torque oil-pressure tubes and py pressure pipe, and if necessary, adjust and replace these components. 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 abrasive damage from rubbing pipes and consequent loss of engine oil.
Which aircraft AD 2000-21-14 applies to
Applies only to airplanes, MSN 101 through 301, certificated in any category, equipped with Pilatus torque oil-pressure tube P/N 577.11.12.105 or 577.11.12.104, or Pratt and Whitney Canada (P&WC) P/N 3119969 py pressure pipe assembly (or FAA-approved equivalents).
Whether AD 2000-21-14 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:
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.