What was found
FLT 1534, TPA-BDL. DIVERTED TO MCO. AFTER TAKEOFF GOT DIRTY SOCK SMELL, HEAVY IN REAR OF CABIN AND COCKPIT. INCREASED DRASTICALLY IN DESCENT. ECS CONTAMINATED DUE TO APU OIL LEAK. ECS DECONTAMINATION PERFORMED, REF LP 3017123-1, AND PACK 1 PACK 2 OZONE FILTERS REPLACED REF LP 3017124, AFTER NO SMELL NOTED. AIRCRAFT OK FOR SERVICE. WORK PERFORMED PER AMM 21-00-00.