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Airworthiness Directive 2017-26-05

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Official AD 2017-26-05 · FR doc 2017-27441 · 2017-12-21 · airframe

Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Models G-1159A (GIII), G-IV, and GIV-X airplanes. This AD was prompted by a report that certain flap tracks were manufactured with the upper flange thickness less than design minimum. This AD requires replacing any defective flap track. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2017-26-05 applies to

MakesGulfstream Aerospace
ModelsG-1159A (GIII), G-IV, GIV-X (G450), G-1159A, GIV-X
Serial-conditional — narrows to serials 460–460, 1129–1129, 1151–1151, 1167–1167, 1175–1175, 1214–1214, 1380–1380, 4118–4118, 4227–4227.

Applies only to specific serial numbers per model: Model G-1159A (GIII) S/N 460; Model G-IV S/Ns 1129, 1151, 1167, 1175, 1214, and 1380; Model GIV-X (G450) S/Ns 4118 and 4227.

Whether AD 2017-26-05 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 2017-26-05 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.