Canberra Tries For Two-Way Record -- The Canberra Bomber taking off London this morning. A Canberra medium jet bomber left London Airport today in an attempt to fly to New York and back in one day. At the controls was captain John Hackett, former RAF coastal command pilot. With him was Mr. Peter Moneypenny, 31-year-old Navigator. The two men already set up 15 unofficial Canberra records together. They hope to reach New York in seven-and-half, hours and to be back in London by teno's clock tonigh