As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE DET 2 FAULT CYCLES ON/OFF ENROUTE ON STATUS PAGE. RECEIVED ALSO FIRE DET 2, FAIL ENROUTE NUMEROUS TIMES ON STATUS PAGE FOLLOWED BY FIRE WARNINGS FOR NR 2 ENGINE WHICH LASTED A FEW SECONDS ONLY. NO OTHER WARNINGS OCCURED BUT THE FIRE DET 2 FAULT REMAINS. REMOVED AND REPLACED NR 2 ENGINE GEAR BOX FIRE DETECTOR RAIL ASSY REF AMM 26-11-03-4-0. NR 2 ENG FIRE LOOP 'A' OPS CHECKS NORMAL.