AD 75-16-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 200 and 400 Series Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 200 and 400 Series Airplanes |
Unsafe Condition
Overheat damage of the rear fuselage tail cone structure due to fire resulting from an APU or jet pipe assembly failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Check the APU turbine bearing seals via an approved oil sampling analysis program or service bulletin within 25 APU hours after AD effective date. If defective seals found, repair the APU or disconnect it and install a cockpit placard. Within 1,000 APU hours after AD effective date, disconnect the APU or modify the APU installation and tail cone per service bulletins.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 APU hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 25 APU hours' time in service from the last inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRITISH AIRCRAFT CORPORATION Model BAC 1-11 200 and 400 Series Airplanes equipped with AiResearch Model GTCP-85-115, -115C, -115K, or -115CK Auxiliary Power Units (APU)
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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