What was found
AIR QUALITY EVENT ON APPROACH JUST PRIOR TO GEAR EXTENSION IN PAX CABIN, STARTED AFT AND MOVED FRWD.-PER TSM 05-50-00-810-831-A. PERFORMED ENG 1 & 2 RUN WITH CREW ASSISTANCE, FOUND NO ODOR IN CABIN FROM PACK 1 OR PACK 2. NO DEFECTS NOTED AT THIS TIME, A/C OK FOR SVC. MOC # 110495.