Boeing Co is in talks with four airlines on orders for its redesigned 777X jetliner valued at as much as $87 billion ahead of next month's Dubai Airshow, people familiar with the matter said. The 255 planes under discussion include 100 to 150 for Emirates, about 50 for Qatar Airways Ltd. and as many as 30 for Etihad Airways, said the people, who asked not to be identified because the details are private. Cathay Pacific Airways Ltd is weighing as many as 25 jets, one person said.

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