Accident Summary
On 11 November 2022, at approximately 12:12 local time, a TL-3000 Sirius (registration OK UUA 92) departed from an unregistered airstrip near Wejherowo, Poland, for a flight with a pilot and a passenger. The flight was the third of the day; the two previous flights had been aborted due to rapidly rising engine coolant temperature exceeding limits, triggering warnings from the engine control unit (ECU). Despite these warnings, the pilot decided to proceed with a third flight, intending to depart from the area.
Sequence of Events
During the third flight, the engine coolant temperature again rose rapidly. The ECU generated several warnings, which the pilot ignored. Approximately two minutes into the flight, the engine shut down. The pilot then conducted an emergency landing in unprepared terrain (a soft field). The landing was hard, with excessive forward and vertical speed and a side drift (traverse), resulting in serious damage to the aircraft.
Injuries and Damage
Both the pilot and the passenger sustained no injuries. The aircraft was seriously damaged.
Probable Cause
The State Commission on Aircraft Accident Investigation determined the following probable cause:
- Improper execution of the emergency landing, consisting of touchdown with excessive forward and vertical speed and with a side drift.
- The primary cause of the event was the in-flight engine shutdown.