AD 77-14-05
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
Excessive fuel contamination of the Auxiliary Power Unit (APU) oil contents due to fuel leakage in Garrett AiResearch Models GTCP 85-115, -115C, or -115CK APU's without British Aircraft Corporation Modification PM 5217.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for fuel leakage in accordance with Service Bulletin 49-PM 5217 within 60 APU hours after the effective date, unless done within the last 20 APU hours. Repeat inspections at intervals not exceeding 80 APU hours. Rectify leaks, drain/refill oil, and continue inspections if leakage exceeds one drop per minute.
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Compliance Time
Within the next 60 APU hours' time in service after the effective date of this AD, unless accomplished within the last 20 APU hours' time in service, and thereafter at intervals not to exceed 80 APU hours' time in service from the last inspection.
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Affected Aircraft
BAC 1-11 200 and 400 Series airplanes with Garrett AiResearch Models GTCP 85-115, -115C, or -115CK APU's installed, not having Modification PM 5217.
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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