Is AD 2012-02-07 a recurring Airworthiness Directive?

No — AD 2012-02-07 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2012-02-07

Q: Which aircraft does AD 2012-02-07 apply to?

AD 2012-02-07 applies to General Electric Company — models CF6-45A, CF6-45A2, CF6-50A, CF6-50C, CF6-50CA, CF6-50C1, CF6-50C2, CF6-50C2B. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2012-02-07 · FR doc 2012-1953 · 2012-01-31 · turbine engine

Airworthiness Directives; General Electric Company Turbofan Engines

What this AD requires

We are superseding two existing airworthiness directives (ADs) for General Electric Company (GE) CF6-45 and CF6-50 series turbofan engines with certain low-pressure turbine (LPT) rotor stage 3 disks installed. The existing ADs currently require inspections of high- pressure turbine (HPT) and LPT rotors, engine checks, and vibration surveys. This new AD retains the requirements of the two ADs being superseded, adds an optional LPT rotor stage 3 disk removal after a failed HPT blade borescope inspection (BSI) or a failed engine core vibration survey, establishes a new lower life limit for the affected LPT rotor stage 3 disks, and requires removing these disks from service at times determined by a drawdown plan. This AD was prompted by the determination that a new lower life limit for the LPT rotor stage 3 disks is necessary. We are issuing this AD to prevent critical life- limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.

Which aircraft AD 2012-02-07 applies to

MakesGeneral Electric Company

ModelsCF6-45A, CF6-45A2, CF6-50A, CF6-50C, CF6-50CA, CF6-50C1, CF6-50C2, CF6-50C2B, CF6-50C2D, CF6-50E, CF6-50E1, CF6-50E2, CF6-50E2B, CF6-50C2-F, CF6-50C2-R, CF6-45, CF6-50

Part-conditional — 9061M23P06, 9061M23P07, 9061M23P08, 9061M23P09, 9224M75P01, 9061M23P10, 1473M90P01, 1473M90P02.

Applies only to engines with any of the listed low-pressure turbine (LPT) rotor stage 3 disk part numbers (Table 1 of this AD) installed. Includes engines marked on the engine data plate as CF6-50C2-F and CF6-50C2-R.

Whether AD 2012-02-07 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 2012-02-07 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.