Editing Hawker Siddeley Nimrod (section)

===AEW3===
{{multiple image
 | align = right
 | direction = vertical
 | width = 250
 | header =
 | image1 = Nimrod-XZ286-133.jpg
 | alt1 = Nimrod AEW3 in flight
 | image_caption1 = Nimrod AEW3 XZ286 at the 1980 [[Farnborough Air Show]]
 | image2 = Nimrod MRA4 1.jpg
 | alt2 = Nimrod MRA4 in flight
 | image_caption2 =Nimrod MRA4 ZJ518 during a test flight
}}
{{Main|British Aerospace Nimrod AEW3}}
In the mid-1970s a modified Nimrod was proposed for the [[Airborne Early Warning and Control|Airborne Early Warning]] (AEW) mission – again as a replacement for the [[Avro Lancaster|Lancaster]]-derived, piston-engined Shackleton AEW.2. Eleven existing Nimrod airframes were to be converted by [[British Aerospace]] to house the [[GEC Marconi]] radars in a bulbous nose and tail. The Nimrod AEW3 project was plagued by cost over-runs and problems with the [[GEC 4000 series|GEC 4080M]] computer used.<ref name="spyflight">[http://www.spyflight.co.uk/nim%20aew.htm "BAe Nimrod AEW 3."] {{Webarchive|url=https://web.archive.org/web/20120502141328/http://www.spyflight.co.uk/nim%20aew.htm |date=2 May 2012 }} ''Spyflight.'' Retrieved: 20 October 2010.</ref> Eventually, the MoD recognised that the cost of developing the radar system to achieve the required level of performance was prohibitive and the probability of success very uncertain, and in December 1986 the project was cancelled. The RAF eventually received seven [[Boeing E-3 Sentry]] aircraft instead.<ref name="spyflight"/>