Is AD 2009-17-01 a recurring Airworthiness Directive?

No — AD 2009-17-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2009-17-01 apply to?

AD 2009-17-01 applies to Gulfstream — models G-IV, GIV-X, GV, GV-SP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2009-17-01

one-time

Official AD 2009-17-01 · FR doc E9-19063 · 2009-08-11 · airframe

Airworthiness Directives; Gulfstream Model G-IV, GIV-X, and GV-SP Series Airplanes and Model GV Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Gulfstream Model G-IV, GIV-X, GV-SP series airplanes and Model GV airplanes. This AD requires, for certain airplanes, a one-time inspection for sealant applied to the exterior of the auxiliary power unit (APU) enclosure (firewall), and, for airplanes with the subject sealant and certain other airplanes, a revision of the airplane flight manual to prohibit operation of the APU during certain ground and flight operations. This AD results from notification from the airplane manufacturer that an improper, flammable sealant was used on the interior and exterior of the APU enclosure (firewall). We are issuing this AD to prevent this flammable sealant from igniting the exterior surfaces of the APU enclosure (firewall) under certain anomalous conditions such as an APU failure/APU compartment fire, which could result in propagation of an uncontained fire to other critical areas of the airplane.

Which aircraft AD 2009-17-01 applies to

MakesGulfstream

ModelsG-IV, GIV-X, GV, GV-SP

Serial-conditional — narrows to serials 1000–?, 4001–4146, 4148–4150, 501–?, 5001–5204, 5206–5217, 5219–5219.

Serial ranges apply per model: G-IV S/Ns 1000 and subsequent; GIV-X S/Ns 4001 through 4146 and 4148 through 4150; GV S/Ns 501 and subsequent; GV-SP S/Ns 5001 through 5204, 5206 through 5217, and 5219.

Whether AD 2009-17-01 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 2009-17-01 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.