As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#188, LAX-BOS. '(ETOPS) ( ENGINE FIRE DETECTION SYSTEMS 2) LOOP B ). REMOVED AND REPLACED ENG 1 LOOP B FIRE HARNESS IAW AMM 26-12-62, OPS CHECK GOOD. PLACARD REMOVED. MX-4 UPDATED. MCC NOTIFIED GROUND VERIFICATION PERFORMED SUCCESFULLY. A/C OK FOR SVC.