As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1407,JFK-CDG. (ETOPS) 'SPUIOUS ENG 2 FIRE LOOP A FAULT MSG CYCLING IN FLT ( ENGINE FIRE DETECTION SYSTEMS 1) LOOP A ); REF TSM 26-12-00-810-805A, AWM 26-12-06 AND AWM 71-51-75. CHECK WIRING, FDU 2WD2 PIN A/K AND A/J = 1481 K OHMS. WIRING CHECK GOOD. ACCOMPLISHED A VISUAL INSPECTION OF THE BLOCK 450VT2 AND FIRE LOOP ELEMENTS FOR SIGNS OF DAMAGE OR COMTAMINATION, FIND NO EVIDENCE. REMOVED AND REPLACED FDU 2WD2 AS A PRECAUTIONARY/ T/S. '