What was found
FLT#2143, EWR-PBI. 'ON INITIAL DESCENT,DEPARTING FL340, 2 ENG ON , APU OFF, AFT CABIN REPORTED DIRTY SOCKS SMELL. ( APU SYSTEM ); REMOVED AND REPLACED APU DEOILER VALVE O-RINGS IAW AMM 49-91-49 LEACK CK GOOD MDDR# 573947 CLEARED MX-4 UPDATED PLACARD REMOVED.'