Is AD 2012-25-09 a recurring Airworthiness Directive?

No — AD 2012-25-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2012-25-09

Q: Which aircraft does AD 2012-25-09 apply to?

AD 2012-25-09 applies to Rolls-Royce Plc — models RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-524H-36, RB211-524H-T-36. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2012-25-09 · FR doc 2012-30383 · 2013-01-02 · turbine engine

Airworthiness Directives; Rolls-Royce plc Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-524G2-19; RB211-524G2-T-19; RB211-524G3-19; RB211-524G3-T-19; RB211-524H2-19; RB211-524H2-T-19; RB211-524H-36; RB211-524H-T-36; RB211-535E4-37; RB211-535E4-B-37; RB211-535E4-B-75; and RB211-535E4-C-37 turbofan engines. This AD was prompted by an investigation by RR concluding that certain intermediate-pressure (IP) turbine discs produced before 1997 by a certain supplier may contain steel inclusions. This AD requires removal of the affected IP turbine discs to inspect them for steel inclusions, and removal of the affected discs from service if they fail the inspection. This AD also requires removal from service of some IP turbine discs at reduced life limits. We are issuing this AD to prevent uncontained IP turbine disc failure, engine failure, and damage to the airplane.

Which aircraft AD 2012-25-09 applies to

MakesRolls-Royce Plc

ModelsRB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-524H-36, RB211-524H-T-36, RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75, RB211-535E4-C-37, RB211

Applies only to engines with intermediate-pressure (IP) discs listed in Appendix 1 and Appendix 2 of Rolls-Royce plc Alert Service Bulletin (ASB) No. RB.211-72-AG493, Revision 2, dated October 12, 2012.

Whether AD 2012-25-09 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 2012-25-09 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.