UNITED GIVES BOEING $12 BILLION ORDER FOR 30 NEW 767 JETS
United Air Lines announces it has placed $1.2 billion order with Boeing Co for 30 new-generation middle-size 767 airliners; decision seen having strong bearing on shape of commercial aviation for rest of century; it is largest commercial order, in dollars committed, ever placed for single airliner or pkg of planes; United simultaneously places $400 million order for Boeing 727's; United pres Richard J Ferris comments; plane will be powered by Pratt & Whitney engines built in Conn; co says order is worth record $200 million; George Warde, head of Airbus operation in US, stresses production will go ahead on new Airbus; Ferris stresses that new planes will prove their value through increased efficiency, notably in fuel consumption; E H Boullioun, pres of Boeing's commercial plane div, comments; 767 diagram; comparison of 767, 747 and Airbus A300; illus of Ferris and UAL Inc chmn Edward E Carlson with 767 model (L)