File Description: Railway Air Services was a British airline formed in 1933 by four railway companies and Imperial Airways. The airline was a domestic airline operating routes within the United Kingdom. One of the more important routes flown was between London and Scotland (London-Birmingham-Manchester-Belfast-Glasgow). The airline's main operating base was Croydon Airport with a further base at Renfrew. In March 1946 RAS acquired three DC-3's for use on it's scheduled services. The airline was nationalised and became part of British European Airways in 1947. Requires the default Douglas DC-3.