Is AD 2012-04-01 a recurring Airworthiness Directive?

No — AD 2012-04-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2012-04-01

Q: Which aircraft does AD 2012-04-01 apply to?

AD 2012-04-01 applies to Rolls-Royce Plc — models RB211-Trent 895-17, RB211-Trent 892-17, RB211-Trent 892B-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 877-17, RB211-Trent 875-17, Trent 800. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2012-04-01 · FR doc 2012-3863 · 2012-02-22 · turbine engine

Airworthiness Directives; Rolls-Royce plc (RR) RB211-Trent 800 Series Turbofan Engines

What this AD requires

We are superseding an existing airworthiness directive (AD) for all RR RB211-Trent 800 series turbofan engines. That AD currently requires removal from service of certain critical engine parts based on reduced life limits. This new AD reduces the life limits of additional critical engine parts. This AD was prompted by RR reducing the life limits of additional critical engine parts. We are issuing this AD to prevent the failure of critical rotating parts, which could result in uncontained failure of the engine and damage to the airplane.

Which aircraft AD 2012-04-01 applies to

MakesRolls-Royce Plc

ModelsRB211-Trent 895-17, RB211-Trent 892-17, RB211-Trent 892B-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 877-17, RB211-Trent 875-17, Trent 800

Whether AD 2012-04-01 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 2012-04-01 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.