What was found
ON DESCENT, LANDING, AND TAXI IN, A STRONG CHEMICAL SMELL WAS NOTICED FROM THE LAST TWO PASSENGER ROWS AND STRONGEST IN THE AFT GALLEY BETWEEN THE TWO AFT LAVS. ODOR WAS STILL NOTICEABLE AFTER THE PASSENGERS LEFT THE AIRCRAFT. PER J/C 26L00021001 FOUND APU TO BE SOURCE OF ODOR, APU AREA SATURATED IN OIL. R&R OIL COOLING FAN IAW AMM 49-52-51 LEAK CHECKED GOOD. THE AIRCRAFT WAS GROUNDED.