As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL PRESSURE MASTER WARNING IN FLIGHT. REMOVED LEFT ENGINE OIL REPLENISHMENT CHECK VALVE. INSTALLED CHECK VALVE TAGGED REPAIR, P/N 2810044-101, S/N 972. ADDED 5 QUARTS TO LEFT ENGINE. OIL TANK SERVICED TO 5 1/2 FULL RED AMM 79-12-13. NO LEAKS NOTED. (M)