AD 68-18-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 177 | Airworthiness Directives; CESSNA Model 177 Airplanes |
Unsafe Condition
Failure of the oil pressure gauge line between the engine crankcase and aircraft firewall
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the copper oil pressure gauge line assembly between the engine crankcase and aircraft firewall with a flexible hose assembly in accordance with Cessna Service Letter No. SE68-14, Supplement No. 1, dated August 23, 1968, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, Central Region.
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Compliance Time
within the next 10 hours' time-in-service after the effective date of this airworthiness directive, unless already accomplished
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Affected Aircraft
Cessna Model 177, Serial Numbers 661, and 17700001 and 17700003 through 17701164 airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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