What happened
Shortly after departing from Te Anau-Manapouri Airport, the aircraft's left engine began vibrating before eventually losing power. Despite this initial mechanical issue, the pilot proceeded with the flight toward Queenstown-Frankton Airport.
During the approach phase of the flight, a second failure occurred when the right engine also ceased functioning. In an effort to manage the situation, the pilot attempted an emergency landing; however, the aircraft struck the Shotover River, a few kilometers from the destination airfield. The impact resulted in three injuries and caused the aircraft to be destroyed.
Findings
Investigations into the accident concluded that the primary factor was a double engine failure, though the specific underlying reason for both engines losing power remains undetermined.