AD 2009-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream | G-IV | Airworthiness Directives; Gulfstream Model G-IV, GIV-X, and GV-SP Series Airplanes and Model GV Airplanes |
Unsafe Condition
Improper, flammable sealant (GMS 4107) was used on the interior and exterior of the auxiliary power unit (APU) enclosure (firewall), which could ignite under certain anomalous conditions such as an APU failure or APU compartment fire, potentially propagating an uncontained fire to other critical areas of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the APU enclosure (firewall) for the presence of flammable sealant on rivets or fillet seals on panel joints. Revise the applicable airplane flight manual (AFM) to prohibit APU operation during certain ground and flight operations for airplanes with the subject sealant or other specified conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Gulfstream Model G-IV, GIV-X, GV-SP series airplanes, and Model GV airplanes, as specified in the AD, with the improper flammable sealant applied to the APU enclosure (firewall).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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