What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Upon touchdown, aircraft left main landing gear turned sideways and began oscillating left and right due to a lost castle nut and bolt at the scissor link knuckle. This imparted a leftward drag onto the aircraft. Pilot applied full right brake and rudder, but was not able to fully overcome leftward drag. Aircraft exited the runway to the left at which point the left main gear dug into the dirt and was broken off. There were no injuries of people onboard and all were able to exit the aircraft.
As the FAA filed it
UPON TOUCHDOWN, AIRCRAFT LEFT MAIN LANDING GEAR TURNED SIDEWAYS AND BEGAN OSCILLATING LEFT AND RIGHT DUE TO A LOST CASTLE NUT AND BOLT AT THE SCISSOR LINK KNUCKLE. THIS IMPARTED A LEFTWARD DRAG ONTO THE AIRCRAFT. PILOT APPLIED FULL RIGHT BRAKE AND RUDDER, BUT WAS NOT ABLE TO FULLY OVERCOME LEFTWARD DRAG. AIRCRAFT EXITED THE RUNWAY TO THE LEFT AT WHICH POINT THE LEFT MAIN GEAR DUG INTO THE DIRT AND WAS BROKEN OFF. THERE WERE NO INJURIES OF PEOPLE ONBOARD AND ALL WERE ABLE TO EXIT THE AIRCRAFT.