AD 2001-14-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerospatiale | Model ATR42-200, -300, -320, and -500 Series | Airworthiness Directives; Aerospatiale Model ATR42-200, -300, -320, and -500 Series Airplanes, and Model ATR72 Series Airplanes |
Unsafe Condition
Intermittent improper functioning of the engine fire handles, due to a machining defect of the control shaft bore guide, which could result in malfunction of the trigger (squib), and failure to activate one of the two engine fire extinguishers.
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Required Actions
Temporarily revise the Airplane Flight Manual (AFM) to add tests of the engine fire protection system and conduct those tests prior to each flight. Replace defective engine fire handles with serviceable fire handles, which terminates the revision of the AFM and the repetitive tests of the engine fire protection system.
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Compliance Time
Before further flight
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Affected Aircraft
Aerospatiale Model ATR42-200, -300, -320, and -500 series airplanes equipped with Labinal engine fire handles, as listed in Avions de Transport Regional Service Bulletin ATR42-26-0023 Revision 1, dated September 14, 2000; and Model ATR72 series airplanes equipped with Labinal engine fire handles, as listed in ATR72-26-1014 Revision 1, dated September 14, 2000.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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