What was found
NR 1 ENGINE FIRE TEST FAILS IN NORMAL AND A LOOP POSITION. ACFT GROUNDED. BITE OF M279 FIRE DETECTION CONTROL MODULE IAW FIM 26-10 TASK 801 SHOWED ACTIVE FAULT FOR WIRING OPEN FOR NR 1 ENGINE LOOP A IAW WDM 26-11-11-1, VISUAL INSPECTION OF NR 1 ENGINE FIRE LOOPS FOUND BROKEN WIRE AT RING TERMINAL FOR LOOP A ON MW0325 HARNESS AT M1759 ENGINE CORE LEFT DETECTOR. REPAIRED WIRING IAW AMM 26-11-02-960-802 AND PERFORMED ENGINE FIRE DETECTION. OPERATIONAL TEST IAW AMM 26-11-00-710-801, ALL TESTS PASSED.