AD 2004-09-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | EMB-135BJ and EMB-145XR | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135BJ and EMB-145XR Series Airplanes |
Unsafe Condition
Cracking in the firewall of the auxiliary power unit (APU), which could result in reduced structural integrity of the firewall and a consequent uncontained APU fire that could spread to the airplane structure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections for cracking in the APU firewall. Repair the firewall if necessary. An optional terminating action for the repetitive inspections is also provided.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
EMBRAER Model EMB-135BJ and EMB-145XR series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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