As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE CLIMB, CREW REPORTED LOUD SQUEAL FOLLOWED BY ODOR OF BURNED OIL AND REPORT OF SMOKE COMING FROM AIR VENTS. THE ACM, COOLING TURBINE FOUND TO HAVE FERROUS MATERIAL ON THE MAGNETIC DRAIN PLUG, COOLING TURBINE WAS DISCOVERED TO BE FAILED, INTERNAL BEARING FAILURE CAUSING UNIT TO LOCK UP.