What was found
ON FINAL APPROACH AT 3000FT SMELL OF "DIRTY SOCK " ODOR WAS APPARENT IN COCKPIT AND ALSO CONFIRMED IN CABIN MORE POTENT TOWARDS AFT. DISSIPATED IN COCKPIT AND F/AS REPORTED STRONGER SMELL REMAINDED TOWARD AFT GALLEY-PERFORMED TSM 05-50-00-810-831A. SOURCE OF FUMES ISOLATED TO PACK 2 . SEE ITEM 2 FOR FINAL DISPOSITION. DESCRIPTION OF ODOR/FUMES: OIL/OIL BURNING, PERSISTENT. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.