CONTINUED appreciation of a good rail link to Prestwick Airport should, like the relentless expansion of Manchester Airport's rail links, give added impetus to the Strathclyde Passenger Transport Authority's proposal for a direct spur line into Glasgow International Airport.

Maximum exploitation of both Prestwick and a Glasgow Airport rail link would be massively assisted by early implementation of the short Glasgow CrossRail link, to overcome the handicap of having to change trains/stations within central Glasgow.

Completion of Glasgow's ''missing link'' rail line (an SPTA/Railtrack Bill is currently before Parliament for construction of CrossRail) would allow rail services from Prestwick or Glasgow Airports to run directly to a wide variety of destinations on the north Clydeside electrified network - eg, Milngavie, Helensburgh, Airdrie, etc, and also on to the ScotRail intercity lines serving Falkirk, Edinburgh, Fife, Dundee and Aberdeen/Inverness.

The currently proposed ''hub interchange'' at Glasgow Cross (an adjunct to inner-city rejuvenation of that area) is intended to give convenient one-stop transfer on to the expanding Lanarkshire rail network, with the other proposed West Street interchange directly accessing into the Cathcart Circle, Neilston, and East Kilbride lines and the Glasgow Underground.

Hopefully that dynamism which is facilitating the spectacular renaissance of Prestwick Airport will now combine with Strathclyde Passenger Transport, Railtrack, and ScotRail to secure funding for the Glasgow CrossRail line, giving domestic users and visitors access to the benefits of a truly integrated Trans-Scotland rail network.

K A Sutherland,

Research Officer,

Railway Development Society

(Scotland), 53 Cochrane Street,

Glasgow. May 3.