Douglas Muir and Patrick Wymark

With a fault discovered in the new Sovereign airliner, Scott-Furlong’s technicians work round the clock to find a solution. But when a man takes work home, where do you draw the line between dedication and security risk? “A Question of Sources” is the 30 September 1963 episode of ‘The Plane Makershttp://www.wymark.org.uk/plane3.html