AD 70-10-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 172I | Airworthiness Directives; CESSNA Model 172I and 172K Airplanes |
| aircraft | Cessna Aircraft Company | 172K | Airworthiness Directives; CESSNA Model 172I and 172K Airplanes |
Unsafe Condition
Failure of the metal oil pressure instrument line between the engine and the firewall can cause loss of engine oil.
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Required Actions
Replace the metal oil pressure instrument line with a flexible hose assembly following Cessna Service Letter No. SE70-10 or Supplement No. 1, or an approved method.
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Compliance Time
Within 50 hours' time in service from June 1, 1970, but by no later than June 30, 1970
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Affected Aircraft
Cessna Model 172I (Serial Numbers 17256513 through 17257161) and 172K (Serial Numbers 17256493, and 17257162 through 17259043)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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