What was found
DURING ENGINE FIRE DETECTION TEST, NR 2 ENGINE FIRE DETECTOR FAILED TO ILLUMINATE, LOOP B. ACFT GROUNDED. TSR ISSUED. ACCOMPLISHED REF MPM CHAPTER 5, TABLE 3, ITEM 1. REPLACED LOWER FAN FIRE DETECTOR ASSY REF AMM 26-11-01-000-802 AND 26-11-01-400-802. REPLACED LT AND RT ENG FIRE DETECTOR ASSY REF MM 26-11-01-400-802. REPLACED CORE FIRE DETECTION HARNESS MW0326 AND MW0325, REF TASK 26-11-02-000-802 AND 26-11-02-400-802. REPLACED UPPER FAN FIRE DETECTOR ASSY REF MM 26-11-01-000-802 AND 26-11-01-400-802. REPLACED ENGINE FAN FIRE DETECTION HARNESS MW0315 & MW0316 REF MM 26-11-02-000-801 & 26-11-02-400-801. OPS CK NORMAL, REF MM 26-11-00-710-801.