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Airworthiness Directive 2017-26-01

one-time
Official AD 2017-26-01 · FR doc 2017-27248 · 2017-12-19 · turbine engine

Airworthiness Directives; General Electric Company Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx-1B64/P2, -1B67/P2, -1B70/P2, -1B70/ 75/P2, -1B70C/P2, and -1B74/75/P2 turbofan engines. This AD was prompted by a report of the failure of the high-pressure turbine (HPT) stage 1 blade retainer and subsequent in-flight shutdown of the engine. This AD requires inspection of the HPT stage 1 blade retainer. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2017-26-01 applies to

MakesGeneral Electric Company
ModelsGEnx-1B64/P2, GEnx-1B67/P2, GEnx-1B70/P2, GEnx-1B70/75/P2, GEnx-1B70C/P2, GEnx-1B74/75/P2, GEnx-1B
Part-conditional — 2445M91P01, 2383M99P02.

Applies only to engines with HPT stage 1 blade retainer P/N 2445M91P01 or 2383M99P02 having a serial number listed in Paragraph 1.A. of GE GEnx-1B Service Bulletin (SB) 72-0326 R02, revised August 16, 2017.

Whether AD 2017-26-01 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 2017-26-01 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.