What happened
On June 12, 2016, at approximately 16:10, a pilot operating a SP-MNSC motor glider departed from EPWK airport for a recreational flight. During the flight, the pilot encountered thermal activity that was too intense to continue the mission safely. Consequently, at 16:45, the pilot performed a precautionary landing in an unprepared field near Niegibalice, located roughly 30 km west of the base airport.
After waiting for two hours, the pilot decided to attempt a takeoff from the same field to return to EPWK. To avoid power lines restricting the climb, the pilot chose a takeoff direction into a light tailwind. This decision resulted in an extended takeoff roll. As the aircraft reached the end of the field, the landing gear struck a tall crop of wheat. This impact caused a loss of airspeed and lift, leading to a ground impact that began with the nose gear and subsequently caused the aircraft to tilt onto its right wing. The engine ceased operation following the collision. The pilot exited the aircraft uninjured, and subsequent testing by police confirmed the pilot was not under the influence of alcohol.
The investigation
The investigation examined the pilot's decision-making process regarding the second takeoff attempt. The investigators reviewed the environmental conditions, including the presence of thermal activity and the wind conditions at the time of the accident. The investigation also assessed the suitability of the takeoff site and the impact of the terrain on the aircraft's performance.
Findings
- The pilot's initial decision to perform a precautionary landing due to strong thermals was appropriate.
- The pilot made a critical error by attempting to take off from the same field where the precautionary landing had occurred.
- The pilot failed to properly evaluate the required takeoff distance relative to the technical capabilities of the SP-MNSC, the impact of the tailwind, and their own skill level.
- The takeoff area was insufficiently sized for the required operation.
- The pilot failed to account for the increased takeoff roll necessitated by the tailwind.