What was found
FLT 610. SDQ-JFK, ( APU BLEED AIR SUPPLY SYSTEM ) FA'S REPORTED FUMES SIMILAR TO HYD FLUID ON T/O FROM SDQ THAT STARTED IN THE AFT SEC OF D/C. SAME THING OCCURED ON FINAL APP. THE APU WAS OFF IN BOTH OCCURANCES NO PHYSICAL SYMPTONS REPORTED BY CREW. THE ODOR WAS NOT PRESENT IN COCKPIT. APU BLACK LIGHT INSPECTION EC A4925017 + APU WASH AND CLEAN WERE ACCOMPLISHED UNDER WO 1482851, FOUND NO EVIDENCE OF LEAK OR CONTAMINATION APU WAS RAN OVER 2 HRS NO ODOR PRESENT.