On 30 March 2013,a Beechcraft Baron G58 aircraft,registered N254F,with two persons on board,took off from Ardmore Aerodrome,New Zealand on private instrument flight rules (IFR) flight to Timaru,New Zealand. Shortly after the aircraft reached the intended cruise altitude of 18,000 feet (Flight Level 180),the aircraft began descending at a high rate and,subsequently collided with the water. Both occupants were fatally injured.