What was found
FLT#1483, JFK-MCO. 'STRONG PERSISTENT DIRTY SOCK FUMES IN COCKPIT DURING DESCENT APPROACH AND LANDING - LIGHT DIRTY SOCK SMELL DURING CLIMBOUT THROUGH CLOUDS - PILOTS WENT ON OXYGEN MASKS - INFLIGHT CONFIRMS AFT CABIN MODERATE; ACCOMPLISHED LEVEL C DECONTAMINATION OF THE ECS PER AMM 21-00-00-615-804. REF LOG PAGE 3787281 (COMPLIED WITH INFONTICE 2017-T015J, ACCOMPLISHED TSM 05-50-00-810-831.A, AND DETERMINED PER MX-270 AND DECISION TABLE THE APU AS THE SOURCE. ACCOMPLISHED LEVEL "C" DECONTAMINATION OF THE ECS IAW AMM 21-00-00-615-804A).'