What happened
The pilot reported that weather conditions included numerous isolated thunderstorms in the vicinity at the time of the incident. After boarding the airplane for departure, the wind direction shifted to a tailwind. The aircraft lifted off approximately three-quarters of the way down the available 2,000-foot grass runway but failed to gain altitude. Recognizing the inability to climb, the pilot elected to abort the takeoff. The aircraft subsequently ran off the end of the runway and entered a plowed field, resulting in a nose-over.
The investigation
The investigation focused on the operational circumstances surrounding the aborted takeoff. Examination of the event revealed that the primary factor was the loss of climb performance immediately after liftoff. The aircraft's inability to clear the runway environment was directly linked to the aerodynamic conditions present during the departure phase.
Findings
Contributing factors to this accident included the pilot's decision to continue takeoff despite a tailwind condition and the resulting failure to achieve adequate climb gradient. The presence of isolated thunderstorms in the area indicated unstable weather patterns, which may have contributed to the sudden wind shift. The aircraft sustained substantial damage due to the hard landing and nose-over after leaving the paved or grass surface.
Safety message
Pilots must be vigilant for changing wind conditions prior to takeoff. A tailwind significantly reduces climb performance and increases ground roll distance, potentially preventing an aircraft from clearing obstacles or staying within the runway limits. Abort decisions should be made early if performance parameters are not met.