|Introduction||Sep 1916 |
|Primary user||U.K. (RFC/RAF)|
|Number built||~500 |
|Wingspan||12.2 m (40 ft 1 in) |
|Engine||90hp RAF 1a vee or|
105hp RAF 1b vee
|Armament||flexible rear Lewis on pillar mount|
51 kg (112 lb) of bombs
|Max Speed||140 km/h (87 mph) |
|Climb||610 m (2,000 ft) in 7:00|
910 m (3,000 ft) in 10:30
1,500 m (5,000 ft) in 19:00
2,000 m (6,500 ft) in 26:30
3,000 m (10,000 ft) in 48:56
|Ceiling||3,700 m (12,000 ft) |
When Frederick Koolhoven offered to reduce the complexity of the R.A.F. B.E.2c for easier production, the result was the Armstrong-Whitworth F.K.3. With the prototype, as with the BE.2, the pilot sat in the rear, leaving the observer with less-than-perfect sight lines, but production aircraft fortunately reversed this and moved the pilot to the front seat of the communal cockpit. Dual controls were provided, which made the FK.3 a natural fit as a trainer later in its career, where it served in large numbers until the adoption of the Avro 504 as a standard trainer. Operationally it was only used in the Middle East, where 47th Squadron used the FK.3 from September 1916 until 1918. Its RFC nickname was Little Ack. 
For more information, see Wikipedia:Armstrong Whitworth F.K.3.
Timeline [note 1]
- British usage numbers are approximate, derived from the squadron histories.
- Bruce, p.12.
- Lamberton, p.42.
- Lamberton, pp.214-215.
- Bruce'69, p.14.
- Philpott'13, pp.379-444.
- 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. ISBN 9780900435027
- Ian Philpott, The Birth of the Royal Air Force. Great Britain: Pen & Sword Books Limited, 2013. ISBN 978-1-78159-333-2