Is AD 2001-25-05 a recurring Airworthiness Directive?

No — AD 2001-25-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2001-25-05

Q: Which aircraft does AD 2001-25-05 apply to?

AD 2001-25-05 applies to Rolls-Royce — models AE 3007A, AE 3007C, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1P, AE 3007. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2001-25-05 · FR doc 01-30952 · 2001-12-19 · turbine engine

Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company) AE 3007 Series Turbofan Engines

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), that is applicable to Rolls-Royce Corporation (formerly Allison Engine Company) AE 3007 series turbofan engines. That AD currently requires removal of certain compressor cone shafts from service before exceeding new cyclic life limits and replacement with serviceable parts. This amendment requires increasing the cyclic life limit for certain serial numbers of new compressor cone shafts, part number (P/N) 23070729, that are used on AE3007A1/3 and AE3007A1P engines. This amendment is prompted by recent approved changes in engineering and manufacturing processes for new compressor cone shafts P/N 23070729. The actions specified by this AD are intended to prevent low-cycle fatigue (LCF) failure of cone shafts, which could result in an uncontained engine failure and damage to the airplane.

Which aircraft AD 2001-25-05 applies to

MakesRolls-Royce

ModelsAE 3007A, AE 3007C, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1P, AE 3007

Part-conditional — 23050728, 23070729.

New, lower life limits (cycles-since-new) established for compressor cone shafts P/N 23050728 and 23070729 in Rolls-Royce Corporation AE 3007 series engines; the applicable CSN limit varies by engine model variant and, for AE 3007A1/3 and AE 3007A1P, by cone shaft S/N (threshold at/around SN MM78599-MM78665 or higher vs. lower).

Whether AD 2001-25-05 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 2001-25-05 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.