What was found
FLT CREW REPORTS #2 ENG FIRE DETECTION FAILS TEST - B LOOP INOP. GROUNDED - YES. ON DEFERRAL. FLT CREW REPORTS #2 ENG FIRE DETECTION FAILS TEST - B LOOP INOP. GROUNDED - YES. CONFIRMED FAULT, #2 ENGINE B-LOOP INOP. REPAIRED R/H CORE DETECTOR HARNESS WIRING TERMINAL LUG REF STANDARD WIRE PRACTICES. FOUND UPPER FAN LOOP DEFECTIVE. REMOVED & REPLACED UPPER FAN DETECTOR REF B737-800 AMM 26-11-01, OPS CK NML.