Is AD 2008-25-01 a recurring Airworthiness Directive?

No — AD 2008-25-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2008-25-01

Q: Which aircraft does AD 2008-25-01 apply to?

AD 2008-25-01 applies to Rolls-Royce — models Trent 553-61, Trent 553A2-61, Trent 556-61, Trent 556A2-61, Trent 556B-61, Trent 556B2-61, Trent 560-61, Trent 560A2-61. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2008-25-01 · FR doc E8-28549 · 2008-12-02 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211 Trent 500 Series Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Which aircraft AD 2008-25-01 applies to

MakesRolls-Royce

ModelsTrent 553-61, Trent 553A2-61, Trent 556-61, Trent 556A2-61, Trent 556B-61, Trent 556B2-61, Trent 560-61, Trent 560A2-61, Trent 500

Part-conditional — FK29581.

Applies only to engines with a low-pressure turbine (LPT) stage 3 disc, part number FK29581, installed. Installed on, but not limited to, Airbus A340-500 and A340-600 series airplanes.

Whether AD 2008-25-01 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 2008-25-01 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.