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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.

The Civil Aviation Authority (CAA) of New Zealand is investigating the accident. On 11 December 2013, investigating officials contacted the Australian Transport Safety Bureau (ATSB) and requested assistance with the analysis of air traffic control audio recordings containing transmissions from the accident aircraft. To facilitate this assistance and protect the audio data and sensitive information received from the CAA, an external investigation was initiated under the provisions of the Australian Transport Safety Investigation Act 2003.

The ATSB has completed an analysis of the recordings and has provided the results of this analysis to the CAA of New Zealand.

Further information on the CAA investigation, including an interim factual report on the occurrence can be found on the CAA website, at:

www.caa.govt.nz, and



Released in accordance with section 25 of the Transport Safety Investigation Act 2003.

General details
Date: 30 March 2013 Investigation status: Completed 
Time: 2247 UTC  
Location   (show map):Off the coast of Kawhia, New Zealand Investigation type: Occurrence Investigation 
State: International Occurrence type: Collision with terrain 
Release date: 15 September 2014 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: Fatal 
Aircraft details
Aircraft manufacturer: Beech Aircraft Corp 
Aircraft model: Baron G58 
Aircraft registration: N254F 
Type of operation: Private 
Sector: Piston 
Damage to aircraft: Destroyed 
Departure point:Ardmore, New Zealand
Destination:Timaru, New Zealand
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Last update 14 November 2018