As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO FIRE ARM LIGHT AND FIRE BELL SOUNDED DURING FLIGHT MOMENTARILY CARGO FIRE TEST DOES NOT DISPLAY DETECTOR FAULT OR MASTER CAUTION DURING GROUND TEST. GROUNDED - YES. PERFORMED CARGO COMPARTMENT SMOKE DETECTION OPERATIONAL TEST. TEST NORMAL FAULT DETECTOR LIGHT BULB IS GOOD WHEN PRESS TO TEST.