What was found
SHIP 399 DIRTY WET SOCK SMELL ON DESCENT STARTED ON POWER PULL TOP OF DESCENT. SMELL THROUGHOUT AIRCRAFT. CORRECTIVE ACTION: AT BLOCK IN, NOTED BOTH ENGINES OVER SERVICED. REMOVED EXCESS OIL, OPERATED ENGINE AT IDLE, & SERVICED OIL AS REQUIRED FOR BOTH ENGINES. PERFORMED DECONTAMINATION OF ECS. OPERATED ENGINES AT IDLE. ALSO INSPECTED #1 AND #2 IP DUCT WITH BLACK LIGHT NO OIL WETNESS. REPLACED RECIRC FILTERS REF AMM 21- 21. ENGINE ONE AND TWO OPERATE PAC 1 AND PAC 2 INSPECT #1 AND #2 IP DUCT NO LEAK. PRECAUTIONARY REPLACE #1 PACK OZONE CONVERTER .(8461929)