What was found
FLT CREW REPORTS NR 2 ENG FIRE DET "B" LOOP INOP. "A" LOOP IS OK. GROUNDED - YES. FOUND LOWER FAN DETECTOR SATURATED WITH OIL. CLEANED BOTH LOWER FAN DETECTOR & UPPER FAN DETECTOR, NO DEFECTS NOTED ON LOOPS & CONNECTIONS. FOUND LEFT UPPER CORE TERMINAL LUG CORRODED & HANGING ON BY 3-4 STRANDS OF WIRE. RE-TERMINATED LUG REF STANDARD WIRE PRACTICE. NR 2 ENGINE FIRE DETECTION SYSTEM (B-LOOP) OPERATIONAL TEST NML REF AMM 26-11-00-710-801.