As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL AROUND 4000 FT MSLA FISH/OILY SMELL WAS NOTICED IN THE COCKPIT AND AFT CABIN. ALL INDICATIONS WERE NORMAL. INSPECTED NO. 1 AND NO. 2 ENGINE INLET AND EXHAUST FOR OIL NONE NOTED. FOUND APU INLET AND APU DOORS SATURATED WITH OIL. BEGAN WORKING AMDS WOEK CARD 2100-2005. WIP 668420. CONT W/C 2100-2005 STOPPED AT STEP 20 (WIP681315) W/C 2100-2005 C/W DECONTAMINATION OF ECS SYSTEM. (LP# 4189124, LP# 4189128)