Duigan biplane

Duigan biplane may refer to a number of different, otherwise un-named aircraft designed and/or built by John Duigan:

• the Duigan glider
• the Duigan pusher biplane, the first Australian powered aircraft
• the Avro Duigan, built by Avro in the UK to a design by Duigan
• the Duigan tractor biplane, Duigan's final design

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