Is AD 2020-25-09 a recurring Airworthiness Directive?

No — AD 2020-25-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2020-25-09

Q: Which aircraft does AD 2020-25-09 apply to?

AD 2020-25-09 applies to Pratt & Whitney Division (Pw) — models PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, PW4170. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2020-25-09 · FR doc 2020-26915 · 2020-12-10 · turbine engine

Airworthiness Directives; Pratt & Whitney Division Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, and PW4170 model turbofan engines with a certain outer combustion chamber assembly and 3rd stage low-pressure turbine (LPT) duct segments installed. This AD was prompted by reports of damaged or failed 3rd stage LPT duct segments on PW engines with the Talon IIB outer combustion chamber assembly configuration installed. This AD requires removing and replacing certain 3rd stage LPT duct segments. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2020-25-09 applies to

MakesPratt & Whitney Division (Pw)

ModelsPW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, PW4170

Part-conditional — 50N434-01, 50N450-01, 51J500, 51J381.

Applies only to engines with 3rd stage low-pressure turbine (LPT) duct segments P/N 50N434-01 or 50N450-01 installed, and Talon IIB outer combustion chamber assembly P/N 51J500 or 51J381 installed.

Whether AD 2020-25-09 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 2020-25-09 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.