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On 21 September 2006 at 2356 Eastern Standard Time, the US National Transportation Safety Board (NTSB) notified the Australian Transport Safety Bureau (ATSB) of an accident involving a foreign registered and operated Grumman G-73T, Turbo Mallard, aircraft, which occurred on 19 December 2005 near Watson's Island, US (see www.ntsb.gov and DCA06MA010). The NTSB requested assistance from the ATSB to obtain information relating to the operation of Turbo Mallard aircraft in Australia.

The ATSB appointed an accredited representative to participate in the investigation into the occurrence, in accordance with clause 5.23 of Annex 13 to the Convention on International Civil Aviation. To protect the information supplied by the NTSB to the ATSB and the investigative work undertaken to assist the NTSB, the ATSB initiated an investigation under the Transport Safety Investigation Act 2003.

The ATSB accredited representative coordinated the exchange of airworthiness information from an Australian operator of Mallard aircraft. That operator had modified an aircraft by fitting turbine engines.

The NTSB is responsible for the final investigation report regarding this occurrence.

Download Final Report
[ Download PDF: 349KB]
General details
Date: 19 December 2005 Investigation status: Completed 
Time: 1839 UTC  
Location   (show map):Watson's Is. USA Investigation type: Occurrence Investigation 
State: International Occurrence type: Collision with terrain 
Release date: 20 April 2007 Occurrence class: Operational 
Report status: Final Occurrence category: Other 
 Highest injury level: Fatal 
Aircraft details
Aircraft manufacturer: Grumman American Aviation Corp 
Aircraft model: G-73 
Aircraft registration: N2969 
Serial number: Nk 
Type of operation: Air Transport Low Capacity 
Damage to aircraft: Destroyed 
Departure point:Watson's Island, Seaplane Base
Departure time:1839 UTC
Destination:Bimini, Bahamas
Fatal: 218020
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Last update 16 February 2016