As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT THE VAPOR CYCLE AIR CONDITIONING WAS MAKING A LOUD NOISE, THEY OPENED THE BAGGAGE ACCESS TO INVESTIGATE & NOTED SMOKE COMING FROM THE AREA WHERE THE VAPOR CYCLE SYS IS INSTALLED. THE MX DEPARTMENT OPERATED THE SYS & FOUND SPARKS & SMOKE EMANATING FROM THE ACFT COMPRESSOR DRIVE MOTOR. THE DEFECTIVE MOTOR WAS REMOVED & AN OVERHAULED UNIT WAS INSTALLED, FT OK.