Squawk Box

May 1999 Issue

Improper Protection

Defective Champion oil filters still showing up

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts. Click here to view "Airworthiness Directives."

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The FAA’s Aircraft Certification Office in Atlanta has received reports of problems with oil filters manufactured by Champion. The problems include collapsed elements, rubber gasket material inside the filter canister, and other “one-time” events. The reports were serious enough for the manufacturer and the FAA to launch an investigation, which revealed that the collapsed elements were caused by the engine oil bypass valve that is installed in some Textron Lycoming engines.

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