AD 77-01-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Commander Aircraft Corporation | 112 | Airworthiness Directives; Rockwell International Model 112 Airplanes |
Unsafe Condition
Engine failure due to loss of engine oil from failure of the engine oil pressure tube assembly, specifically cracks and oil leakage in the P/N 46320-1 copper tube and its fittings.
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Required Actions
Conduct preflight visual checks for cracks and leakage in the copper oil pressure tube assembly. Perform cleaning and inspection every ten hours' time in service. Replace the P/N 46320-1 copper tube assembly with P/N 46136-63 hose assembly and P/N 46080-3 elbow within 50 hours' time in service as per Service Bulletin SB-112-46.
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Compliance Time
Within 50 hours' time in service after the effective date of this airworthiness directive
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Affected Aircraft
Rockwell International Model 112 airplanes (Serial Numbers 3 through 470)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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