What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) During the landing roll on runway 17, the aircraft abruptly departed the left side of runway coming to rest approximately 50 yards from the runway centerline. The pilot stated that the landing was normal until touch down when the aircraft started turning to the left. He further stated that the aircraft would not respond to rudder input. He suspected possible mechanical failure. Upon arrival on scene, the aircraft was observed approximately 50 yards east of the runway heading approximately 170 degrees. The right wing tip was resting on the ground. The right main gear leg was separated near the axle. Tire marks on the runway and in the grass leading up to the aircraft were evident. There were no scratches or paint transfers evident on the runway. Washers and other miscellaneous parts were found in the grass near the aircraft. A pilot eyewitness waiting to back taxi for departure stated that the winds were fluctuating from the northeast then to the southeast at approximately 10 knots. He observed the aircraft bounce a couple of times before settling on the runway. He stated that the pilot got the tail wheel on the ground but then to his surprise the tail rose and the a ircraft turned 90 degrees into the wind. The aircraft then departed the left side of the runway, crossed the service road and turned parallel with the runway coming to rest in the grass. The airport manager stated that he provided a UNICOM airport advisory to an aircraft landing just before the incident aircraft. At that time the wind was 100 degrees at 8 knots.
As the FAA filed it
(-23) DURING THE LANDING ROLL ON RUNWAY 17, THE AIRCRAFT ABRUPTLY DEPARTED THE LEFT SIDE OF RUNWAY COMING TO REST APPROXIMATELY 50 YARDS FROM THE RUNWAY CENTERLINE. THE PILOT STATED THAT THE LANDING WAS NORMAL UNTIL TOUCH DOWN WHEN THE AIRCRAFT STARTED TURNING TO THE LEFT. HE FURTHER STATED THAT THE AIRCRAFT WOULD NOT RESPOND TO RUDDER INPUT. HE SUSPECTED POSSIBLE MECHANICAL FAILURE. UPON ARRIVAL ON SCENE, THE AIRCRAFT WAS OBSERVED APPROXIMATELY 50 YARDS EAST OF THE RUNWAY HEADING APPROXIMATELY 170 DEGREES. THE RIGHT WING TIP WAS RESTING ON THE GROUND. THE RIGHT MAIN GEAR LEG WAS SEPARATED NEAR THE AXLE. TIRE MARKS ON THE RUNWAY AND IN THE GRASS LEADING UP TO THE AIRCRAFT WERE EVIDENT. THERE WERE NO SCRATCHES OR PAINT TRANSFERS EVIDENT ON THE RUNWAY. WASHERS AND OTHER MISCELLANEOUS PARTS WERE FOUND IN THE GRASS NEAR THE AIRCRAFT. A PILOT EYEWITNESS WAITING TO BACK TAXI FOR DEPARTURE STATED THAT THE WINDS WERE FLUCTUATING FROM THE NORTHEAST THEN TO THE SOUTHEAST AT APPROXIMATELY 10 KNOTS. HE OBSERVED THE AIRCRAFT BOUNCE A COUPLE OF TIMES BEFORE SETTLING ON THE RUNWAY. HE STATED THAT THE PILOT GOT THE TAIL WHEEL ON THE GROUND BUT THEN TO HIS SURPRISE THE TAIL ROSE AND THE A IRCRAFT TURNED 90 DEGREES INTO THE WIND. THE AIRCRAFT THEN DEPARTED THE LEFT SIDE OF THE RUNWAY, CROSSED THE SERVICE ROAD AND TURNED PARALLEL WITH THE RUNWAY COMING TO REST IN THE GRASS. THE AIRPORT MANAGER STATED THAT HE PROVIDED A UNICOM AIRPORT ADVISORY TO AN AIRCRAFT LANDING JUST BEFORE THE INCIDENT AIRCRAFT. AT THAT TIME THE WIND WAS 100 DEGREES AT 8 KNOTS.