Known for a short time as the ‘Jet Dragon’, the DH-125 later became known as the HS-125 when the merger of several British aircraft companies occurred.

Harley Newman was an avid gyrocopter operator for many years and developed a series of single-seat machines for sporting purposes.

Intended as a replacement for the Douglas DC-3, and a direct competitor to the Fokker Friendship for civil and military use, the HS-748 was designed by A V Roe and Co (later part of the Hawker Siddeley Group) as a 36-seat commercial airliner.

John Harmon in the United States designed a development of the Vans RV-4 known as the Rocket II, having previously designed and built the Rocket

The Tomtit was designed to replace the Avro 504N as a training aircraft, and was built with an all-metal airframe.

William Ewart Hart was born on 20 April 1885 at Parramatta, NSW. He was a dentist who had an interest in flight and who contributed much to early aviation in Australia.

The Alpha is one of series of light aircraft produced by HB-Flugtechnik in Austria, the others designs including the Amigo, Cubby, the Dandy, and a two-seat mid-wing high-performance aircraft known as the Tornado which has a pusher engine driving a five-blade propeller and is fitted with a retractable undercarriage.