What happened
On April 18, 2026, two pilots operating a SOCATA TB-9, registration D-EUGA, were conducting a series of training flights at the Zborowo (EPZB) airfield. The crew consisted of a pilot gaining experience in the aircraft type and the aircraft owner, who acted as a safety pilot.
Prior to the flight, the crew had addressed fuel contamination issues discovered the previous day. While they successfully cleared water from the left wing tank, they were unable to remove contaminants from the right tank. During engine start, the fuel selector was initially set to the right tank; although the crew switched to the cleaner left tank shortly after startup, they decided to proceed with the flight after a successful engine test, assuming any contaminated fuel would be consumed during the test and takeoff roll.
After completing an initial circuit, the crew prepared for a second takeoff. During the climb, both pilots observed a significant loss of engine power. An observer on the ground reported irregular engine operation and dark smoke trailing the aircraft. The aircraft, flying at an altitude of approximately 110 feet, began to lose altitude over the edge of Lake Niepruszewskie. To avoid a water landing, the safety pilot took control, leveled the aircraft, and initiated a 180-degree turn toward a nearby field. While attempting to minimize touchdown speed by deploying flaps, the aircraft struck an embankment and subsequently capsized, with the left wing striking a willow tree. The aircraft was destroyed, though no injuries were reported among the two crew members.
The investigation
The PKBWL investigation team collected statements from witnesses and participants, verified pilot licenses, and reconstructed the flight path using GPS data. The team also examined the wreckage and the accident site, securing samples of fuel from the tank, fuel filter, and carburetor, as well as the fuel pump for further analysis.