What was found
FLT#748, LAS-JFK. 'IN-FLIGHT REPORTS DIRTY SOCK SMELL BELOW 10,000 FT IN AFT SECTION; COMPLIED WITH INFO NOTICE 2017-T015. NO ODOR WAS NOTICED ON THE ENGINE. DETERMINED APU AT FAULT. APU PLACED ON MEL. PERFORMED LEVEL B ECS DECONTAMINATION IAW AMM 21-00-00615-803A. A/C OK FOR CONTINUED SERVICE.'