Qatar Airways has said it will not take delivery of Boeing's new 787 Dreamliner until an engine defect is modified, Reuters has reported. "The 787 has an engine with new technology. However, there has been a material defect in the engine which now needs replacement and inspection," Qatar Airways chief executive, Akbar al-Baker said. "We have informed Boeing that we will not take delivery until the 787s have the new modified shaft," said al-Baker. Qatar has placed orders for 60 Dreamliners - 30 firm and an option for 30 more - and selected General Electric Co's new-generation GEnx engine for the aircraft.