As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING FLIGHT THE NUMBER 2 COOLING PACK WAS MAKING A LOUD RUSHING AIR NOISE. THEY ALSO REPORTED A SLIGHT BURNING SMELL FROM THE NUMBER 2 COOLING PACK. MAINTENANCE DEFERRED THE NUMBER 2 COOLING PACK. THE DEFERRAL WAS CLEARED LATER THAT DAY IN KSDF. KSDF MAINTENANCE REPLACED THE TORN COUPLING FROM THE DUAL TEMP CONTROL VALVE TO THE AIR CYCLE MACHINE. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.