As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMELL OF BURNING IN COCKPIT TURNED OFF LEFT PACK AND SMELL SUBSIDED THEN RETURNED. INSP OF E&E BAY FWD AND AFT CARGO PITS; ALSO OPENED AND INSP LT PAC BAY; HOWEVER, NO SMELL OR DEFECTS NOTED. SUSPECT FRICTION IN BELT LOADER PRODUCED SMOKE.