What was found
CLIMBING TO APPROXIMATELY 436 KNOTS, LEFT ENGINE OIL QUANTITY INDICATION BEGAN TO INDICATE OIL QUANTITY LOSS. EMERGENCY DECLARED, CAPTAIN STARTED THE APU AND SHUTDOWN THE LEFT ENGINE IN FLIGHT. THE AIRCRAFT FLEW FOR APPROXIMATELY 20 MINUTES ON SINGLE ENGINE AND LANDED SAFELY WITHOUT FURTHER INCIDENT. THE ENGINE SHOWED NO OIL LEAKS. REPLACED THE LEFT ENGINE OIL QUANTITY TRANSMITTER IAW AMM 79-31-01 AND ACCOMPLISHED HIGH POWER ENGINE RUNS IAW AMM 71-00-00, NO DEFECTS NOTED.