Description: On the 24th May 1934, RAF bases around the world open their doors to the public as the first Empire Air Day is held, with proceeds going to the RAF Benevolent Fund. The aircraft is a Handley Page Hinaidi Bomber. The Hinaidi was a development of the Hyderabad heavy night-bomber - the Mark II version being of all-metal construction (the first RAF heavy bomber to be so built). The original prototype Hinaidi (a re-engined Hyderabad) made its maiden flight in March 1927 and ten were ordered, the first reaching No 99 Squadron in September 1928. A switch to all-metal construction had been taken in an effort to prolong the aircraft's life, and the se were known as the Hinaidi Mark II. The first of these aircraft reached No 99 Squadron from late 1929 onwards. Other Hinaidis served with Nos 10 and 503 (Special Reserve) Squadrons until October 1935. Length: 59ft 3in (18.06m) Span: 75ft 0in (22.86m) Height: 17ft 4in (5.28m) Max Speed: 115mph (185km/h) Engines: Two 450hp Bristol Jupiter VIII Bombload: 1,568lb (712kg) Armament: Three Lewis guns (one each in nose, mid-upper and -lower positions).