As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENG B SYSTEM, FIRE DETECTION INOPERATIVE. ACFT GROUNDED. ACCOMP ENG/APU FIRE DETECT CONTROL MODULE BITE IAW FIM TASK 26 10 00 810 801. ENG 2, LOOP B, CORE LT DETECT FAULT LOGGED. PERF FIM TASK 26-10-00-810-805. LT CORE DETECT ELEMENT RESISTANCE READS OPEN. REPLACED ENG 2 CORE LT FIRE DETECTION ELEMENT LOOP B IAW AMM TASK 26-11-01-000-801 AND 26-11-01-400-801. PERFORMED ENGINE FIRE DETECTION OPS TEST IAW AMM TASK 26-11-00-710-801. OPS TEST PASSED.