What was found
DURING SHORT FINAL, PASSENGER AND F/A REPORTED LOUD NOISE UNDER THE FLOOR AND ELECTRICAL ODOR IN THE COCKPIT, FLAPS 15 DEGREES GEAR DOWN AND LOCKED. REMOVED FLOORBOARDS, INSPECTED SUPP AC AND AIR DISTRIBUTION SYSTEMS WITH NO DFECT NOTED, RAN ENGINES TO CHECK ACM OPERATION AND OPS TEST OF TEMP CONTROL SYS WITH SATISFACTORY RESULTS, OPS TEST OF RECIRCULATION AIR SYS GOOD.