What was found
AIRCRAFT PERFORMED AN UNSCHEDULED LANDING AT MZT DUE TO DURING CRUISE, THE LEFT ENGINE PRESENTED LOW OIL QUANTITY INDICATION; SO FLIGHT CREW ACCOMPLISHED THE QRH 7.21 PROCEDURE. AT MZT, MAINTENANCE PERSONNEL PERFORMED LEFT ENGINE LEAK CHECK IAW AMM 71-00-00, FIM 79-05 TASK 808 PROCEDURE, DETECTING THE LEFT ENGINE STARTER DAMAGED; SO THE LEFT ENGINE STARTER WAS REPLACED IAW AMM 80-11-00, OPERATIONAL TEST AND DRY MOTOR LEAK TEST WERE PERFORMED IAW AMM 79-00-00 AND AMM 71-00-00 AND BITE TO EEC IAW FIM 73-00 TASK 801 PROCEDURE, ALL TESTED CORRECT.