What was found
SAT - FLT 0437 - A STRONG BURNING ODOR WAS OBSERVED IN THE COCKPIT AND CABIN ON FINAL APPROACH TO SAT WITH THE ICE PROTECTION ON. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A LT AIR CONDITIONING SYSTEM DUCT BLOWN IN THE TAIL COMPARTMENT AFT OF WATER SEPARATOR AND LOOSE INSULATION. THE DUCT WAS REMOVED AND REPLACED AND THE INSULATION WAS REMOVED. NO ODOR WAS OBSERVED WHILE PACKS WERE OPERATED WITH THE ICE PROTECTION ON. (X)