What was found
LEFT ENGINE FIRE WARNING WITH EICAS MESSAGE “LT ENGINE FIRE”, FIRE INDICATION STOPPED WHEN FIRE SWITCH PULLED. CORRECTIVE ACTION:THE FIRE DETECTOR HARNESS WERE CHECKED AND FOUND CHAFING, IT WAS ISOLATED, THE TURBINE OVERHEAT SWITCH S10140 WAS FOUND GROUNDED AND THE RESISTANCE ABOVE 20 OHMS IT WAS REPLACED, LEFT POWER PLANT WAS CHECKED AFTER IN-FLIGHT SHUT DOWN, NO EVIDENCE OF FIRE WAS FOUND, RUN UP TEST WAS ACCOMPLISHED IAW AMM 71-00-00-6 AND 26-13-01, TASK CARD 71-00-206-015.