Is AD 2001-04-10 a recurring Airworthiness Directive?

No — AD 2001-04-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-04-10 apply to?

AD 2001-04-10 applies to Pratt & Whitney Canada — models PW305, PW305A. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-04-10

one-time

Official AD 2001-04-10 · FR doc 01-4889 · 2001-03-02 · turbine engine

Airworthiness Directives; Pratt & Whitney Canada (PWC) Model PW305 and PW305A Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney Canada (PWC) Models PW305 and PW305A turbofan engines, that requires removing stage 4 low pressure turbine (LPT) disks from service before exceeding new, lower cyclic life limits. This amendment is prompted by the results of a spin pit test analysis which indicate that the stage 4 LPT disk does not have full published life. The actions specified by this AD are intended to prevent LPT disk failure resulting from premature cracking of the LPT disks, which could result in an uncontained engine failure and damage to the airplane.

Which aircraft AD 2001-04-10 applies to

MakesPratt & Whitney Canada

ModelsPW305, PW305A

Part-conditional — 30A1457, 30A1499.

Applies only to engines with stage 4 low pressure turbine (LPT) disks, part numbers 30A1457 and 30A1499, installed.

Whether AD 2001-04-10 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 2001-04-10 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.