As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFT AND FORWARD CARGO FIRE LOOPS TEST RANDOMLY, INTERMITTENTLY AND NOT AT ALL ON BOTH LOOPS. DETECTOR FAULT LIGHT ILLUMINATES INTERMITTENTLY. REMOVED AND REPLACED A1-(AALA202510022865), A2-(AALA202510028734), B1-(AALA202510022821) AND B2-(AALA202510022099) CARGO BAY SMOKE DETECTORS. PER AMM 26-16-01. OPERATIONAL TESTS NORMAL AT THIS TIME.