Grumman Mallard VH-CQA was destroyed with the loss of two lives when it crashed into the Swan River in Perth Western Australia on Jan 26, 2017, in front of a large crowd gathered for an airshow and fireworks display to celebrate Australia's national day. The cause has yet to be established, but opinion in the aviation community suggests it was a low level base/final stall/spin with insufficient height to recover. Temperature on the day was about 40 deg Celsius (104 deg F.)