Business: Airborne

Boeing Aircraft Co., which made the war's biggest planes, also suffered one of its biggest ironies. Although its B-29s and B-17s carried the bulk of U.S. bombardment power, Boeing was hit harder by victory than any other plane maker. Within weeks after war's end, contract cancellations forced it to close its Seattle plant. Hope seemed to be grounded.

But by last week Boeing had turned its big-plane liability into its No. 1 asset was in the air again. Lawyer-President William M. Allen announced that United Air Lines, Inc. had signed an $11,000,000 contract...