While Airco was unable to procure Beardmore engines for the original Airco D.H.1, supplies eventually opened up and the Airco D.H.1A was the result. They were used for training and Home Defense, but six were also sent to the Middle East for active service.  They served with No.14 Squadron starting in July 1916 where they were used to escort B.E.s.
|Designer||Geoffrey de Havilland|
|Introduction||July 1916 |
|Primary user||U.K. (RFC/RAF)|
|Number built||73 [note 1]|
|Developed from||Airco D.H.1|
|Wingspan||12.5 m (41 ft) |
|Armament||forward-firing Lewis on pillar mount|
|Max Speed||140 km/h (90 mph) |
|Climb||1,100 m (3,500 ft) in 6:27|
2,000 m (6,500 ft) in 14:45
2,100 m (7,000 ft) in 16:20
3,000 m (10,000 ft) in 27:30 
|Ceiling||4,100 m (13,500 ft) |
For more information, see Wikipedia:Airco DH.1.
- Lamberton, p.60.
- Bruce, p.157.
- Lamberton, pp.214-215.
- Bruce'69, p.160.
- Munson, p.18.
- Lamberton, pp.212-213.
- 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
- Kenneth Munson, Fighters 1914-19, Attack and Training Aircraft. New York: MacMillan Publishing Co., Inc., 1976. ISBN 0713707607
- Ian Philpott, The Birth of the Royal Air Force. Great Britain: Pen & Sword Books Limited, 2013. ISBN 978-1-78159-333-2