As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRIP NR 1204364- DURING CRUISE, CREW NOTICED A BURNING SMELL FROM THE AIR DISTRIBUTION SYSTEM. CREW ISOLATED PROBLEM TO THE NR 1 PACK. THE PACK WAS SHUT DOWN AND THE FLIGHT CONTINUED TO ITS DESTINATION. MAINTENANCE FOUND THE COALESCER BAG DIRTY; IT WAS CLEANED AND REINSTALLED.