What was found
FLT 83, JFK-MCO. BURNING ODOR SMELLED IN COCKPIT DURING DECENT AT 20,000 FT. ODOR ISOLATION CHECKLIST ACCOMPLISHED. ODOR SMELLED WITH PACK 1 OFF AND ODOR SMELLED SMELLED WITH PACK 2 OFF. ODOR WAS PRESENT FROM 20K TO GROUND; ACCOMPLISHED W/O 1527102 TSI ON ENGINES AND APU INSPECTION C/W. ODOR SOURCE FOUND & RESOLVED, ODOR NO LONGER PERSIST WITH APU OR ENGINE BLEED. OK FOR CONT SVC.