Boeing

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may be committed to its schedule to test the 787 Dreamliner, but some customers are backing away from their orders.

In the past week, an unnamed customer canceled an order for 25 Dreamliners, according to the company's Web site. Boeing has now lost a total of 57 orders for the 787 this year. However, in April, it took a new order for eight 787s from Gulf Air.

Boeing still has orders for 861 Dreamliners. So far this year, customers have canceled orders for 59 Boeing aircraft, including a 747 and a 777 as well as the 787s.

Boeing said last week that the first 787 will fly this quarter. "We are making great progress and moving ever-closer to first flight," said Scott Fancher, general manager of the 787 program, in a prepared statement. Structural tests have been completed and fuel testing is believed to be under way.