As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAN - FLT 1179 - EN ROUTE ORD/SAN DURING CRUISE, CREW NOTED BURNING SMELL IN CABIN. AIRCRAFT PROCEEDED TO LAND SAN WITHOUT INCIDENT. REPLACED RIGHT AIR CYCLE MACHINE COALESCER BAG. ACCOMPLISHED PACK BURN-OUT PROCEDURE. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)