What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The pilot reported that upon lowering the landing gear a "clunk" was heard. The emergency extension procedures were complied with. Several flybys of the airport were accomplished. It was reported by ground personnel that all three landing gears were down. The aircraft was landed and during rollout the left main landing gear folded. Damage to the aircraft was limited to the left engine propeller, left landing gear and left landing gear inboard door. Maintanance personnel have installed a brace on the left landing gear. Final determination of the cause will be accomplished by either U.S. Or canadian maintenance personnel. A U.S. M or d report will be submitted by the U.S. Maintenance personnel.
As the FAA filed it
THE PILOT REPORTED THAT UPON LOWERING THE LANDING GEAR A "CLUNK" WAS HEARD. THE EMERGENCY EXTENSION PROCEDURES WERE COMPLIED WITH. SEVERAL FLYBYS OF THE AIRPORT WERE ACCOMPLISHED. IT WAS REPORTED BY GROUND PERSONNEL THAT ALL THREE LANDING GEARS WERE DOWN. THE AIRCRAFT WAS LANDED AND DURING ROLLOUT THE LEFT MAIN LANDING GEAR FOLDED. DAMAGE TO THE AIRCRAFT WAS LIMITED TO THE LEFT ENGINE PROPELLER, LEFT LANDING GEAR AND LEFT LANDING GEAR INBOARD DOOR. MAINTANANCE PERSONNEL HAVE INSTALLED A BRACE ON THE LEFT LANDING GEAR. FINAL DETERMINATION OF THE CAUSE WILL BE ACCOMPLISHED BY EITHER U.S. OR CANADIAN MAINTENANCE PERSONNEL. A U.S. M OR D REPORT WILL BE SUBMITTED BY THE U.S. MAINTENANCE PERSONNEL.