AD 93-01-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GULFSTREAM AEROSPACE CORPORATION Model G-1159 (GII), G-1159A (GIII), and G-1159B (GIIB) Series Airplanes |
| aircraft | Gulfstream Aerospace Corporation | G-1159A | Airworthiness Directives; GULFSTREAM AEROSPACE CORPORATION Model G-1159 (GII), G-1159A (GIII), and G-1159B (GIIB) Series Airplanes |
| aircraft | Gulfstream Aerospace Corporation | G-1159B | Airworthiness Directives; GULFSTREAM AEROSPACE CORPORATION Model G-1159 (GII), G-1159A (GIII), and G-1159B (GIIB) Series Airplanes |
Unsafe Condition
Progressive structural degradation at buttock line (BL) 145 wing spanwise splice and possible loss of fail-safe strength capability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the forward and aft lower plank splice fail-safe channels and flanges and splice fittings between wing BL 135 and 156 to detect cracks using specified Gulfstream Customer Service Bulletins. If cracks are found within limits, perform repetitive inspections every 6 months and repair/replacement no later than the next 18-month wing tank interior inspection. If cracks exceed limits, repair and replace before further flight. Submit crack reports within 10 days.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 150 hours time-in-service after the effective date of this AD, or within 90 days after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Gulfstream Aerospace Corporation Model G-1159 (GII), G-1159A (GIII), and G-1159B (GIIB) series airplanes; certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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