Boeing Co. said the results of a key airworthiness test for its long delayed 787 are "positive," but it will be weeks before the aircraft maker can say whether it's a success.
The aircraft maker said Sunday the test involved flexing the jet's wings while applying loads to the frame to replicate 150 percent of the most extreme forces the airplane could experience in flight.
The wings were pushed up about 25 feet during the ground test performed at Boeing's Everett, Wash., factory.
The test took more than two hours, and thousands of pieces of data were collected to measure wing performance.
Boeing, based in Chicago, says the data will be reviewed over the next several weeks.