As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT OIL STRAINER, STRAINER CLOG LIGHT CAME ON DURING CRUISE & REMAINED ON. CHECKED LT ENGINE OIL STRAINER IAW AMM 72-00-02. REPLACED STRAINER TWICE & RAN ENG. MINOR COKE CONTAMINATION FOUND IN STRAINER WITH NO OTHER CONTAMINATION NOTED.