Accident Sequence
The pilot reported landing on runway 07. After touchdown with all three wheels on the asphalt and near the end of roll out, with the yoke full back and aileron into the wind, the tail lifted and the aircraft yawed to the right. The pilot attempted correction with left rudder and brake, but the tail lifted again and the yaw to the right was more severe than the first occurrence. Subsequently, the left main gear collapsed.
Wind Conditions
Prior to landing, the temporary tower reported winds from 100 degrees at 7 knots. The pilot perceived the winds as fairly steady at those values throughout the approach. After the accident, upon exiting the aircraft, the pilot reported facing down runway 07 and feeling wind hitting the back of the neck. Observing the wind sock, the pilot estimated the wind had shifted to southwesterly at about 12 to 15 knots. Shortly afterward, the tower reported winds from 190 degrees at 12 knots to other aircraft. Reported winds at three observation stations in the area surrounding the accident airport showed variability in both direction and speed starting about 1 1/2 hours after the accident.
Pilot Report
The pilot indicated on the NTSB accident report that no mechanical malfunction or failure was involved in the accident.