What was found
OIL SMELL IN CABIN DURING FLIGHT. SMELL WAS IN FLIGHT DECK, FWD & AFT CABIN/FOUND OIL SMELL TO BE FROM THE LT PACK. PERFORMED OPS CHECK OF APU ELECTRICAL AND BLEED SYSTEM WITH NO DEFECTS NOTED. STRONG ODOR COMING FROM THE AIR VENTS DURING CLIMB AND DESCENT/PERFORMED STAGE 1&2 CLEANING OF THE ECS ON LT & RT AIRCOND SYSTEMS, POST CLEANING & INSP OF ECS, R&R OF LT & RT OZONE FILTERS.