|Primary users|| U.K. (RFC/RAF)|
|Developed from||Handley-Page O/100|
|Wingspan||30.5 m (100 ft) |
|Engine||2×322hp Rolls-Royce Eagle VI or|
2×360hp Rolls-Royce Eagle VIII 
|Armament||1-2×flexible nose Lewis|
rear left Lewis
rear right Lewis
rear downward Lewis[note 1]
680 kg (1,500 lb) to 910 kg (2,000 lb) of bombs
|Max Speed||156 km/h (97 mph) |
|Climb||2,000 m (6,500 ft) in 27:10 [note 2]|
|Service Ceiling||2,600 m (8,500 ft) [note 3]|
The Handley-Page O/100 had been Britain's best heavy bomber, and the Handley-Page O/400 was a refinement of that design. The chief difference was the removal of the fuel tanks from the engine nacelles to a pair of main tanks in the fuselage and smaller gravity tanks on the upper wing. The shortening of the nacelle allowed an ordinary strut to be placed behind the nacelle. While a handful of planes were built with alternative engines, the standard was the Rolls-Royce Eagle VI or VIII.
While an order for one hundred was placed in August, 1917, it was not until the spring of 1918 that the O/400s started arriving in numbers, and it was only in late summer that they were used in large bombing formations.
Fifteen hundred Liberty-engined American O/400s were ordered from Standard, but only 107 had been delivered before the Armistice. American crews were just getting accustomed to the the type and they were still training in England when the war ended. 
For more information, see Wikipedia:Handley-Page Type O.
|Maneuver||Damage||Dmg Points||Max Alt.||Climb|
Miniatures and Models
- Metal kit: Heroics & Ros GWA111
- Metal kit: Tumbling Dice
- Lamberton, pp.214-215.
- Bruce'69, p.272.
- Lamberton, p.64.
- Bruce'69, p.277.
- Munson, p.72.
- J.M. Bruce. British Aeroplanes 1914-18. Great Britain, Funk & Wagnalls, 1957, 1969. ISBN 0370000382
- W.M. Lamberton and E.F. Cheesman, Reconnaissance & Bomber Aircraft of the 1914-1918 War. Great Britain: Harleyford Publications Ltd., 1962.
- Kenneth Munson, Bombers: Patrol and Reconnaissance Aircraft, 1914-1919. New York: The MacMillan Company, 1968, Blandford Press Ltd. ISBN 978-0753721711