AD 89-02-12 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-IV | Airworthiness Directives; GULFSTREAM Model G-IV Airplanes |
Unsafe Condition
Hazardous deviations from the intended course due to Bendix instrument landing system (ILS) radios malfunction.
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Required Actions
Discontinue use of Bendix ILS radios by pulling and securing circuit breakers, affixing placards, modifying wiring per Gulfstream Service Change No. 110, and reactivating systems after antenna relocation per approved method. Accomplish modifications per Gulfstream Service Changes No. 110 and 110A.
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Compliance Time
Prior to further flight after April 3, 1989, and within 10 hours of airplane operation after April 3, 1989. Alternatively, modifications under paragraphs (e)(1) and (e)(2) must be done before further flight after their accomplishment.
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Affected Aircraft
Gulfstream Aerospace Corporation Model G-IV airplanes as listed in Gulfstream Aircraft Service Change No. 110, dated January 24, 1989.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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