2021 $1 Heroes of The Sky Centenary of The Royal Australian Air Force Silver Proof Coin

The Royal Australian Air Force clocks up a century in 2021. Among the force’s female trailblazers is Robyn Williams, who initially enlisted as an engineer cadet in 1979 before undertaking pilot training as soon as women were eligible. Wing Commander Williams went on to become a flying instructor and test pilot. As a test pilot she flew 20 different aircraft including the Russian MiG-21; a supersonic jet fighter. She spent five years test flying the C-130J Hercules in Atlanta, USA, ahead of Australia’s acquisition of 12 aircraft.