What happened
The incident involved a solo training mission that originated at Graz-Thalerhof Airport. The aircraft was piloted by Adolf Sikorovsky, who departed for a local flight. During the en route phase, the airplane experienced a loss of control. This event led to a crash in Pernegg an der Mur, a location situated approximately 30 kilometers north of Graz. The circumstances surrounding the initial loss of control are currently unknown. As a result of the accident, the pilot was killed.
Findings
The source material does not provide specific contributing factors or official conclusions regarding why the aircraft went out of control. It only confirms that the crash occurred in unknown circumstances during a training flight.