Is AD 2011-26-11 a recurring Airworthiness Directive?

No — AD 2011-26-11 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2011-26-11 apply to?

AD 2011-26-11 applies to General Electric Company — models GE90-110B1, GE90-115B, GE90. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-26-11

one-time

Official AD 2011-26-11 · FR doc 2011-32832 · 2011-12-30 · turbine engine

Airworthiness Directives; General Electric Company (GE) GE90-110B1 and GE90-115B Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for the products listed above, with certain part number (P/N) high-pressure compressor (HPC) stages 2-5 spools installed. This AD was prompted by an aborted takeoff caused by liberation of small pieces from the HPC stages 1-2 seal teeth and two shop findings of cracks in the seal teeth. This AD requires eddy current inspection (ECI) or spot fluorescent penetrant inspection (FPI) of the stages 1-2 seal teeth of the HPC stages 2-5 spool for cracks. This AD only allows installation of either HPC stator stage 1 interstage seals that are pregrooved or previously worn seals with acceptable wear marks to prevent heavy rubs. We are issuing this AD to detect cracks in the HPC stages 1-2 seal teeth due to heavy rubs that could result in failure of the seal of the HPC stages 2-5 spool, uncontained engine failure, and damage to the airplane.

Which aircraft AD 2011-26-11 applies to

MakesGeneral Electric Company

ModelsGE90-110B1, GE90-115B, GE90

Part-conditional — 351-103-106-0, 351-103-107-0, 351-103-108-0, 351-103-109-0, 351-103-141-0, 351-103-142-0, 351-103-143-0, 351-103-144-0.

Applies only to engines with a high-pressure compressor (HPC) stages 2-5 spool, with any of the listed part numbers, installed.

Whether AD 2011-26-11 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 2011-26-11 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.