As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE LEFT PACK HAS STRONG BURNING SMELL AND UNCONTROLLABLE TEMPERATURE. USING THE AIRCRAFT MAINTENANCE MANUALS MAINTENANCE TROUBLESHOT, REMOVED, REPLACED, AND TESTED THE LEFT AIR CYCLE MACHINE. AIRCRAFT WAS RELEASED FOR SERVICE.