Boeing said it had "identified a technical solution" to a problem with its new 787 Dreamliner aircraft and that a new delivery schedule would be issued in the current quarter.

The announcement in Boeing's second quarter earnings report came a month after Boeing delayed the first flight and delivery of its 787 to reinforce the structure of the aircraft, the latest setback in a programme seen as a key to the aerospace giant's future.

"The 787 programme has identified a technical solution to the previously announced requirement to reinforce an area within the side-of-body joint, and is currently evaluating alternative ways to implement that solution," Boeing said in a statement.

"The company expects to complete its assessment of the schedule and financial implications during the third quarter."

The programme had new orders for 13 airplanes during the quarter and cancelled orders for 41 others. Total firm orders are now 850 airplanes from 56 customers.

The 787 Dreamliner is the company's first new model in more than a decade and features 50 per cent plastic composites, compared with 12 per cent on its 777s, helping lower fuel consumption.