AD 95-23-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | Avro 146-RJ100A | Airworthiness Directives; British Aerospace Model BAe 146-100A, -200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
| aircraft | BAE Systems (Operations) Limited | Avro 146-RJ70A | Airworthiness Directives; British Aerospace Model BAe 146-100A, -200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
| aircraft | BAE Systems (Operations) Limited | Avro 146-RJ85A | Airworthiness Directives; British Aerospace Model BAe 146-100A, -200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-100A | Airworthiness Directives; British Aerospace Model BAe 146-100A, -200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-200A | Airworthiness Directives; British Aerospace Model BAe 146-100A, -200A, and -300A Airplanes and Model Avro 146-RJ70A, -RJ85A, and RJ-100A Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-300A | 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 central panel of the forward firewall of the auxiliary power unit (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
Conduct repetitive close detailed visual inspections to detect cracking and evidence of exhaust leaks in the forward face of the central panel of the APU bay firewall. Replace the central panel with a new titanium panel if cracking or leakage is found. Prohibit APU operation until replacement is completed. Install a protective aluminum alloy shield on the left-hand vertical stiffener to increase inspection intervals.
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Compliance Time
within 14 days after crack detection
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Affected Aircraft
British Aerospace Model BAe 146-100A, -200A, -300A and Avro 146-RJ70A, -RJ85A, RJ-100A airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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