spekesoftly Thanks for that. Unfortunately, it doesn't help a lot because in those days the RAF maintained only a 6000ft portion of the runway, roughly centrally within the overall length. The ASDAs quoted in 1983 would be from the displaced thresholds. I think that the resurfacing in 1989 restored the usable runway to its full length, but perhaps someone else can confirm that. I have airborne photographs (taken by me!) of the of the runway being worked on in 1989, but it's not clear whether the whole length was involved. I'll stick with 9800ft until someone can authoritatively show otherwise!
PS, measurement of the 1987 OS 50 thou shows the runway to be 3000m, near enough, which is close enough to 9800ft for me!
Last edited by scroggs; 26th Aug 2002 at 10:21.