Is AD 97-17-04 a recurring Airworthiness Directive?

Yes — AD 97-17-04 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 97-17-04 apply to?

AD 97-17-04 applies to Pratt & Whitney — models JT8D-209, JT8D-217, JT8D-217C, JT8D-219, JT8D. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-17-04

recurring

Official AD 97-17-04 · FR doc 97-22307 · 1997-08-26 · turbine engine

Airworthiness Directives; Pratt & Whitney JT8D-200 Series Turbofan Engines

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to Pratt & Whitney JT8D-200 series turbofan engines, that currently requires cleaning of front compressor front hubs (fan hubs); initial and repetitive eddy current (ECI) and fluorescent penetrant inspections (FPI) of tierod and counterweight holes for cracks; removal of bushings; the cleaning and ECI and FPI of bushed holes for cracks; and, if necessary, replacement with serviceable parts. In addition, the current AD requires reporting the findings of cracked fan hubs. This amendment does not change the current AD's inspection procedures, or the effectivity date that starts the cycle count for the initial inspection schedules. This AD does, however, add an additional inspection schedule that requires the initial inspection of certain fan hubs with standard drilled holes and coolant channel drilled (CCD) holes to occur earlier than the existing AD requires. Also, this AD requires reporting the results of the initial fan hub inspections. This amendment is prompted by additional investigation since publication of the current AD that reveals that certain fan hubs with standard drilled holes and CCD holes may be more susceptible to cracking. The actions specified by this AD are intended to prevent fan hub failure due to tierod, counterweight, or bushed hole cracking, which could result in an 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 97-17-04 applies to

MakesPratt & Whitney

ModelsJT8D-209, JT8D-217, JT8D-217C, JT8D-219, JT8D

Part-conditional — 5000501-01.

Applies only to engines with front compressor front hub (fan hub) P/N 5000501-01 installed.

Whether AD 97-17-04 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 97-17-04 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.