What was found
ARRIVED AT AIRCRAFT, DIRTY SOCK SMELL PREVALENT, ENTIRE CABIN AND COCKPIT, LASTED THE ENTIRE TIME I WAS ON THE PLANE. PERFORMED BSI OF NBR 2 ENG. OIL STAINING/WETTING FOUND, CONDITION NOT ALLOWED, ENGINE CHANGE REQUIRED. R/R RECIRC FILTERS. #2 ENG REPLACED ON LP# 2635994. (LP# 9850445)