Is AD 2018-09-04 a recurring Airworthiness Directive?

No — AD 2018-09-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-09-04 apply to?

AD 2018-09-04 applies to Gulfstream Aerospace Corporation — models G-IV, GIV-X. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-09-04

one-time

Official AD 2018-09-04 · FR doc 2018-12519 · 2018-06-11 · airframe

Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

What this AD requires

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to certain Gulfstream Aerospace Corporation Models G-IV and GIV-X airplanes. Paragraphs (h)(3) through (5) of the AD incorrectly reference Customer Bulletin 238A as Customer Bulletin 283A. This document corrects that error. In all other respects, the original document remains the same; however for the sake of clarity, we are publishing the entire rule in the Federal Register.

Which aircraft AD 2018-09-04 applies to

MakesGulfstream Aerospace Corporation

ModelsG-IV, GIV-X

Serial-conditional — narrows to serials 1000–1399, 1400–1535, 4001–4355.

Model G-IV S/Ns 1000 through 1399 apply only if Aircraft Service Change (ASC) 416A (MSG-3) has been incorporated; S/Ns 1400 through 1535 apply without that condition. Model GIV-X S/Ns 4001 through 4355.

Whether AD 2018-09-04 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 2018-09-04 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.