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Airworthiness Directive 97-09-01

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Official AD 97-09-01 · FR doc 97-10585 · 1997-04-25 · turbine engine

Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Pratt & Whitney PW2000 series turbofan engines. This action requires initial and repetitive inspections for cracks in the forward face of the first stage high pressure turbine (HPT) disks at the base of the fir tree lug at the outer diameter (OD) snap fillet radius where the side plates mate with the disk, and rework to the first stage HPT disk. Additionally, this AD establishes a new, reduced cyclic life limit for certain disks. This amendment is prompted by reports of two uncontained disk failures resulting from a fir tree lug fracturing, subsequently releasing two blades and a fir tree lug, which penetrated the engine HPT turbine case. The actions specified in this AD are intended to prevent fracture of the first stage HPT disk, resulting in a possible uncontained engine failure and damage to the aircraft.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 97-09-01 applies to

MakesPratt & Whitney
ModelsPW2000

Whether AD 97-09-01 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 97-09-01 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.