As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENG FIRE DETECTION LOOP B TEST FAULT. GROUNDED - YES. ACCOMPLISHED TSR 701294, FIM 26-10 TASK 805 ENGINE - WIRING HARNESS/FIRE DETECTOR. M01759 LEFT CORE FIRE DETECTOR AND M01760 RIGHT CORE FIRE DETECTOR FOUND BAD. REMOVED AND REPLACED M01759/M01760 ENGINE FIRE DETECTORS IAW AMM TASK 26-11-01/401. PERFORMED OPERATIONAL ENGINE FIRE DETECTION OPERATIONAL TEST IAW AMM TASK 26-11-000-710-801, TEST GOOD.