Is AD 2006-22-13 a recurring Airworthiness Directive?

No — AD 2006-22-13 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2006-22-13

Q: Which aircraft does AD 2006-22-13 apply to?

AD 2006-22-13 applies to Pratt & Whitney — models PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4098. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2006-22-13 · FR doc E6-18368 · 2006-11-02 · turbine engine

Airworthiness Directives; Pratt & Whitney PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, and PW4098 Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, and PW4098 turbofan engines, with certain front turbine hub part numbers installed. This AD requires a onetime visual inspection of the anti-rotation slots in the front turbine hub, for a machining nonconformance, and its replacement if the inspection failed. This AD results from a report of a crack found in an anti-rotation slot of a front turbine hub, during overhaul shop inspection. The anti-rotation slot geometry was not machined in conformance with the design drawing during manufacture. We are issuing this AD to prevent uncontained engine failure, damage to the airplane, and injury to passengers.

Which aircraft AD 2006-22-13 applies to

MakesPratt & Whitney

ModelsPW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4098, PW4000

Part-conditional — 50L761, 52L701, 55L221, 52L901, 53L121, 55L521, 53L021.

Applies only to engines with front turbine hub part numbers 50L761, 52L701, 55L221, 52L901, 53L121, 55L521, or 53L021 installed. Installed on, but not limited to, Boeing 777 airplanes.

Whether AD 2006-22-13 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 2006-22-13 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.