Avro 547
 The Avro 547 was a prototype triplane airliner developed in Britain after the First World War. It utilised components from the highly successful 504 but added an extra set of wings and a new deep fuselage housing a fully enclosed cabin to seat four passengers. The aircraft was powered by a 160 hp (120 kW) Beardmore engine. The pilot sat in an open cockpit offset to port.