As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON SHORT FINAL, CREW REPORTED A LOUD BANG FROM THE TRANSMISSION DECK, PILOT REPORTED A TRANSMISSION PRESSURE LIGHT ILLUMINATED. LANDED WITHOUT INCIDENT. ON THE MAINTENANCE INSPECTION, REVEALED THE OIL COOLER FAN DRIVE SHAFT HAD SHEARED AND CUT INTO THE OIL COOLER FINS AND OIL PASSAGES. THE TRANSMISSION WAS REMOVED FOR REPAIR.