What was found
"DURING DECENT (10,000) FUME EVENT, DIRTY SOCK SMELL SUSPECTED PACK 1- TURNED OFF PACK 1 AND SMELL DISAPATED-REF TSM 05-50-00-810-831-A. CREW DID NOT FILL CABIN ODOR REPORTING SHEET. FOUND APU OIL TO BE OVERSERVICED. DRAINED APU OIL IAW AMM 12-13-49, TO PROPER LEVEL. PERFORMED LEVEL A DECONTAMINATION OF THE ECS IAW AMM 21-00-00. R&R RECIRC FILTERS IAW AMM 21-21-41. NO SMELL NOTED. A/C OK FOR SERVICE. APPARENT CABIN SOURCE-CABIN AIR SUPPLY VENTS,.