AD 93-25-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GULFSTREAM Model G-1159 (G-II) Series Airplanes |
Unsafe Condition
In-flight failure of one or both winglets, leading to a resultant unsafe flutter condition of the airplane.
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Required Actions
Remove Aviation Partners winglets manufactured under STC SA5964NM and restore the airplane to its original type design prior to further flight, or revise the FAA-approved AFM Limitations Section to restrict gross operating weight and/or operating speed as approved by the Manager, Seattle Aircraft Certification Office.
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Compliance Time
Within 10 days after the effective date of this AD
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Affected Aircraft
Gulfstream Model G-1159 (G-II) series airplanes equipped with Aviation Partners winglets under STC SA5964NM.
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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