What was found
NR 1 ENGINE FIRE/OVERHEAT (FIRE HANDLE) WILL NOT ILLUMINATE DURING FIRE/OVERHEAT TEST. FAULT LIGHT IS ILLUMINATED DURING FIRE/OVERHEAT TEST. ALL SWITCHES POSITIONED TO "NORMAL". FIRE DET MOD. BITE REVEALED NR 1 ENG B-LOOP FAULT. CYCLED FIRE HANDLE IN RIGHT MLG W/W HANDLE MECHANISM APPEARED DIRTY. CLEANED HANDLE. "B" LOOP FAULT CLEARED. RAN ENGINE FIRE DETECTION OPERATIONAL TEST SEE MM 26 11 00 710 801. NO HISTORY PAST 60 DAYS.