Is AD 2011-23-04 a recurring Airworthiness Directive?

Yes — AD 2011-23-04 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2011-23-04

Q: Which aircraft does AD 2011-23-04 apply to?

AD 2011-23-04 applies to General Electric — 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.

recurring

Official AD 2011-23-04 · FR doc 2011-28671 · 2011-11-07 · turbine engine

Airworthiness Directives; General Electric Company (GE) CF6 Turbofan Engines

What this AD requires

We are superseding an existing airworthiness directive (AD) for the engines identified above. That AD currently requires initial and repetitive visual inspections of the forward engine mount assembly side links for cracks, stripping and reapplying the Sermetel W coating on the side links at every exposure of the side link. This new AD requires those same inspections, stripping and reapplying the Sermetel W coating, and adds two part numbers to the applicability. This AD was prompted by a review of the inspection program, which revealed that GE had omitted two affected side link part numbers from the applicability. We are issuing this AD to prevent failure of the side links and possible engine separation from the airplane.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2011-23-04 applies to

MakesGeneral Electric

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, CF6-80A, CF6-80A1, CF6-80A2, CF6-80A3, CF6-50C2-F, CF6-50C2-R, CF6

Part-conditional — 9204M94P01, 9204M94P03, 9346M99P01, 9346M99P03, 9204M94P02, 9204M94P04, 9346M99P02, 9346M99P04.

Applies only to engines with left-hand side links P/N 9204M94P01, 9204M94P03, 9346M99P01, or 9346M99P03, and right-hand side links P/N 9204M94P02, 9204M94P04, 9346M99P02, or 9346M99P04, installed on the forward engine mount assembly (Configuration 2).

Whether AD 2011-23-04 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 2011-23-04 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.