As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CARGO FIRE SYS TEST, AFT ARM LIGHT DOES NOT ILLUMINATE. ACFT GROUNDED. PERFORMED CARGO BAY SMOKE DETECTION. OPS CHECKED IAW AMM REF 26-16-00-710-801, TEST PASSED. INSPECTED AFT CARGO SMOKE DETECTORS NO DEFECTS FOUND. NO HISTORY 30 DAYS.