What was found
FLT 640 - GRR - LOWER CARGO COMPARTMENT FIRE DETECTOR HAS YELLOW MAINTENANCE LIGHT AND NO GREEN SYSTEM LIGHT. REMOVED AND REPLACED LOWER AFT CARGO FORWARD DETECTOR. SYSTEM STILL SHOWS MAIN CONTROL FAULT LIGHT. REMAINS ON DEFERRAL. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 640 - GRR - LOWER CARGO COMPARTMENT FIRE DETECTOR HAS YELLOW MAINTENANCE LIGHT AND NO GREEN SYSTEM LIGHT. REMOVED AND REPLACED LOWER AFT CARGO FORWARD DETECTOR. SYSTEM STILL SHOWS MAIN CONTROL FAULT LIGHT. REMAINS ON DEFERRAL. (M)