As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE SMELL NOTICED IN THE SUPERNUMERARY COMPARTMENT AND SMOKE DETECTOR SOUNDED. NO SMOKE NOTED. ALL C/B'S IN PLACE. FIRE DEPARTMENT PERFORMED THERMAL IMAGING NO FAULTS NOTED. BATTERY IN SMOKE ALARM DETECTOR LOW, REMOVED AND REPLACED BATTERY DETECTOR. OPS CHECK NORMAL. NOTE: MECHANIC NOTICED K LOADED WAS RUNNING AT THE MAIN CARGO DOOR.