Well,they may have missed out,as Ryanair were looking at Leuchars AND Errol for possible Ops. The MOD eventually deciding it wasn't a good idea,and Errol was mentioned as a possible location in the Perthshire Advertiser,but I think it was Tim (ATC Dundee) who told me it would cost £25 million to make Errol fit for that. Tim also said that Dundee could not accommodate 737s even if the runway was extended (something to with lateral dimensions,as opposed to length)