What was found
UPON ARRIVING AT THE AIRPORT, NOTICED A MUSTY & OILY ODOR IN THE CABIN & COCKPIT. THIS SMELL PERSISTED & BECAME STRONGER WITH APU USAGE & WHILE INFLIGHT. UPON LANDING WE BOTH FELT A BURNING SENSATION IN BOTH OUR EYES. THE OILY ODOR IS MUCH STRONGER IN THE COCKPIT THAN THE CABIN. R & R APU IAW AMM 49-10-01-900-802. OPERATIONAL & LEAK CHECKS WERE SATISFACTORY. ALSO COMPLIED WITH CHECK & DECONTAMINATION OF THE AIR CONDITIONING SYS AFTER POLLUTION, WORK DONE IAW AMM 05-50-00-700-801.