What was found
FLT#20, LHR-JFK. (ETOPS) 'ENG 2 FIRE LOOP A FAULT IN FLIGHT; REMOVED AND REPLACED FIRE-OVERHEAT LOOP A IAW AMM 26-12-17. DURING ENGINE RUN FAULT DISAPPEARED. THIS CLEARS FAULT, OPS CHECK GOOD.
ENGINE: IAE, PW1133GAJM, SERIAL: P771891, TT: 4634, TC: 682