AD 78-05-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 Series Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 Series Airplanes |
Unsafe Condition
Destruction of the fuel boost pump electrical connector due to arcing, overheating, or deterioration of the 'O' ring seal.
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Required Actions
Install placards on fuel boost pump circuit breakers and center fuel tank transfer pumps, revise Airplane Flight Manual limitations sections, visually inspect fuel boost pumps for leakage, inspect connectors for arcing/overheating/O-ring deterioration, replace affected parts if issues found, and disassemble/disassemble connectors per BAC ASB or FAA-approved equivalent.
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Compliance Time
Within the next 300 hours airplane time in service after the effective date (March 23, 1978), and subsequent intervals as specified (e.g., 200 hours for inspections, 6,000 or 10,000 hours for certain compliance steps).
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Affected Aircraft
British Aircraft Corporation Model BAC 1-11 Series airplanes: 203/AE, 204/AF, 212/AR, 215/AU, 201/Z/AC, 401/AK, 410/AQ, 419/EP, and 412A/EB models.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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