What was found
DURING CRUISE FLIGHT, FLIGHT ATTENDANT COMPLAINED OF A BURNING ODOR IN CABIN. DESECENDED AND SHUT OFF THE LEFT A/C PACK WITHIN 1 MIN. THE RIGHT PACK TEMP VLV OPENED TO FULL HOT WITH THE RIGHT PACK TEMP CONTROL IN AUTO. TURNED THE LEFT PACK ON, TURNED OFF THE RT PACK AND WITHIN 3 MINS THE BURNING ODOR DISSIPATED IN THE CABIN. DID DUCT BURN-OUT PER M/M. CKD OPERATION OF BOTH PACKS, PACK OPERATION NORMAL, REPLACED COALESCER BAGS.