What happened
On April 11, 2021, a pilot operating a rented Aero AT-3 R100, registration SP-TOF, arrived at Gliwice Airport (EPGL) for a scheduled sightseeing flight. After an initial flight within the aerodrome traffic zone, the pilot returned to the airport and performed a low pass over runway 08 to assess the prevailing weather conditions.
During the landing sequence, the pilot attempted three separate approaches to runway 08. While the pilot believed the wind had subsided by the final attempt, video evidence and witnesses indicated that all three approaches were unstable. During the flare, the aircraft experienced significant lateral and directional instability. As the wheels made contact with the runway, the aircraft began a continuous roll toward the left wing.
In an attempt to recover, the pilot increased engine power to initiate a go-around. However, the sudden increase in power generated a propeller torque effect that caused the aircraft to yaw further to the left and roll to an angle of approximately 70 degrees. The aircraft subsequently lost altitude and struck the ground, with the left wing impacting the grass. The aircraft was destroyed, though the pilot was able to exit the cabin uninjured.
The investigation
The PKBWL investigation examined the aircraft's maintenance records, the pilot's flying experience, and the meteorological conditions at the time of the accident. The investigation reviewed airport surveillance and witness video, which confirmed the instability of the landing approaches. The investigation also analyzed the mechanical state of the Aero AT-3 R100, finding no evidence of mechanical failure or pre-existing defects.
Findings
- The pilot had limited flying experience, with only 86 total hours and 18 hours on the specific aircraft type.
- The pilot performed flight operations in strong crosswind gusts that were perpendicular to the landing direction.
- The pilot's reaction to the loss of lateral stability during the flare was delayed.
- Increasing engine power during the go-around attempt introduced an unfavorable propeller torque moment, which exacerbated the loss of directional control.
- The impact of the left wing against the ground helped dissipate energy, preventing more severe injuries to the pilot.