Is AD 2005-26-09 a recurring Airworthiness Directive?

No — AD 2005-26-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2005-26-09 apply to?

AD 2005-26-09 applies to Pratt & Whitney — models JT9D-7R4, JT9D. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-26-09

one-time

Official AD 2005-26-09 · FR doc 05-24448 · 2005-12-27 · turbine engine

Airworthiness Directives; Pratt & Whitney JT9D-7R4 Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-7R4 turbofan engines. This AD requires inspection of the blade root thickness of 1st stage fan blades identified by part number (P/N) and serial number (SN) in this AD, by a repair station approved by PW to perform the inspection. This AD results from a report that a repair station created their own repair and performed it on 520 1st stage fan blades, without approval from PW. We are issuing this AD to prevent 1st stage fan blade fracture and uncontained engine failure, resulting in possible damage to the airplane.

Which aircraft AD 2005-26-09 applies to

MakesPratt & Whitney

ModelsJT9D-7R4, JT9D

Whether AD 2005-26-09 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 2005-26-09 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.