What happened
On June 12, 2000, a Jakovlev Jak-52 departed from the Chemnitz-Jahnsdorf airfield to perform aerobatic maneuvers as part of an aviation event. The aircraft, carrying the pilot and one passenger, entered the Zwönitz-Geyer aerobatic zone, located approximately 13 km east-southeast of the departure airfield.
Witnesses observed the aircraft performing several maneuvers, including loops and spins. Following a brief pause in maneuvers to allow other aircraft to pass, the aircraft flew westward toward rising terrain. During this phase, the pilot was reportedly flying toward the sun. Witnesses observed the aircraft performing a roll to the right; during this maneuver, at an angle of approximately 90 degrees, the aircraft entered an uncontrolled flight state. The aircraft subsequently struck the forest at a 70-degree angle without bank and caught fire. The impact resulted in two fatalities, including the pilot and the passenger, and the total destruction of the aircraft.
The investigation
The investigation was conducted by the BFU. On-site examination was complicated by the high degree of destruction caused by the impact and the subsequent fire, which also destroyed onboard documents and the pilot's personal records. Radar and radio communications data were unavailable. The investigation relied on witness statements, physical evidence at the crash site, and forensic autopsy results.
Investigators examined the pilot's credentials, noting discrepancies in reported flight experience. While some records suggested a total of 201 flight hours, other witness accounts suggested over 400 hours. The pilot held a valid private pilot license with aerobatic endorsements. The aircraft, registered in Lithuania, had undergone a major overhaul in 1999 and had no documented technical defects. The investigation also considered the pilot's recent activity, noting he had performed several passenger aerobatic flights earlier that day without incident.