AD Amdt-39-9426
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British | Aerospace Model BAe 146-100A, - 200A, and -300A | Airworthiness Directives; British Aerospace Model BAe 146-100A, - 200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
Unsafe Condition
Cracking due to leakage of hot exhaust gases in the forward face of the forward firewall of the APU bay could damage the wiring to the APU fire bottle, resulting in failure of the APU fire bottle to discharge in the event of an APU fire.
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Required Actions
Inspect for cracking and evidence of exhaust leaks in the forward face of the central panel of the forward firewall of the APU bay. Replace the central panel with a new panel if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
British Aerospace Model BAe 146-100A, -200A, -300A and Model Avro 146-RJ70A, -RJ85A, and RJ-100A airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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