AD 74-23-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-159 | Airworthiness Directives; GRUMMAN AMERICAN CORPORATION G-159 Airplanes |
Unsafe Condition
Failure of the fire extinguisher squib circuits due to single point failure of electrical power, which could result in inability to discharge fire extinguishers during an engine fire emergency.
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Required Actions
Remove existing left and right engine fire extinguisher switches and left hand eyebrow circuit breaker panel nameplate. Install MS24524-21 switches, electrical wiring, 159SB10112-1 nameplate, and check out system in accordance with Grumman Gulfstream I Aircraft Service Change 210.
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Compliance Time
within the next 200 hours time in service after the effective date of this airworthiness directive unless already accomplished
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Affected Aircraft
Grumman American Corporation G-159 airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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