AD 78-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 65 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 65-80 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 65-88 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80-8800 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 65-B80 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | 70 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | A65 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | A65-8200 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
| aircraft | Textron Aviation Inc. | E50 | Airworthiness Directives; BEECH Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65- 80, 65-A80, 65-A80-8800, 65-B80, 65-88 and 70 Airplanes |
Unsafe Condition
The possibility of powerplant fire occurrence exists due to inadequate fire resistance of flexible fuel, oil, hydraulic, and fuel or oil vapor carrying hose assemblies in the engine compartment.
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Required Actions
Install a temporary Airplane Flight Manual Supplement within 25 hours time-in-service after June 1, 1978. Replace engine compartment hoses with fire-resistant equivalents meeting TSO C53A Type C/D or specified alternatives within 100 hours time-in-service (extendable to 200 hours if AD 77-25-01 inspections are done every 50 hours). Install continuous fire detector systems in engine compartments and wheel wells by January 31, 1979.
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Compliance Time
Within the next 25 hours time-in-service after June 1, 1978 (for part A), 100 hours time-in-service (extendable to 200 hours with conditions for part B), and on or before January 31, 1979 (for part C).
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Affected Aircraft
Beech Models E50, F50, G50, H50, J50, 65, A65, A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, and 70 airplanes not modified under STCs SA444SW or SA587SW.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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