Bea's Air Race Entry In Refuelling Demonstration -- A demonstration of refuelling during the flight is given with the Bea Viscount at London Airport to-day. Equipped and ground for its arduous 12,000 miles dash, the Bea Vickers Viscount Endeavour' - Britain's sole representative in the Transport Handicap section of the England - New Zealand air race - was shown at London Airport to-day (Wednesday). The plane, powered by gas turbines, has been modified for the race. Bea's Chief Flight Captain, a