Boeing Company (NYSE: BA) yesterday (Thursday) announced it would test-fly its 787 Dreamliner later this year but disappointed customers by delaying delivery of the plane until the fourth quarter of 2010.

Wall Street cheered the announcement as Boeing’s stock soared more than 6% in New York trading after the company said it still expects the 787 to be profitable.

The rally came despite news that costs for the first three test planes would be charged-off as having no commercial value, resulting in an estimated pretax charge of $2.5 billion, or $2.21 a share, in the third quarter. Boeing said the charge wouldn’t affect its cash flows.

“This new schedule provides us the time needed to complete the remaining work necessary to put the 787’s game-changing capability in the hands of our customers,” said Boeing Chief Executive Officer Jim McNerney.

The 787, already two years behind its original schedule, was scheduled for its

For The Boeing Co. (BA), the strike may be over, but the fallout continues. Just days after resolving an eight-week strike by 27,000 unionized machinist workers, the Chicago-based aerospace giant announced that the job action will force it to delay the first test flight of its problem-plagued 787 Dreamliner passenger jet until next year.

Boeing was planning to make the inaugural flight of the next-generation jetliner – already delayed four times – during the fourth quarter. But company spokesman Jim Proulx said the strike – which started Sept. 6 and forced Boeing to temporarily shutter its commercial aircraft business – forced the firm to push the test flight into next year.

Boeing is conducting a special assessment to determine just how much the strike affected its production schedule. The company will revise the Dreamliner’s schedule – including a new date for that first test flight – based