Aviat A1 N801RA accident near Etna, Wyoming

Probable cause

The pilot’s premature rotation at insufficient airspeed during takeoff to avoid an unexpected animal on the runway, which resulted in a loss of control and subsequent nose-over during the aborted takeoff. Contributing to the accident was the pilot’s excessive brake application.

NTSB analysis

The pilot was departing from a private grass airstrip when an animal ran onto the runway. In an attempt to avoid a collision, the pilot applied abrupt back pressure on the control yoke, and the airplane lifted off before reaching a sufficient airspeed for sustained flight. The airplane settled back onto the runway and bounced. With limited runway remaining, the pilot aborted the takeoff and applied heavy braking, and the airplane subsequently nosed over, resulting in substantial damage to the rudder and vertical stabilizer.

The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Text from the NTSB. Open the NTSB docket for WPR25LA247 for the full record.