This Buffalo was completed at Downsview in May 1978 and was one of four built for the Sudanese Air Force, serialled 811 and also used by Sudan Airways as ST-AHP. It has been restored as Canadian Armed Forces DHC-5 115461 which was flying under United Nations colours when it was shot down over Syria on 9th August 1974, killing all nine on board. Some parts of the prototype Buffalo were used in the rebuild of the museum's example, which was dedicated to the "Canada Nine" in 2009.