Boeing has just wrapped up the final tests needed to certify its new Rolls-Royce-powered 787 Dreamliner. Although the 787 faced well publicized delays, Boeing is now preparing to make its first deliveries next month. Boeing has more than 800 orders for the $185.2 million 787 on the books. More than 200 orders are for the “stretched” 787-9 variant, which can carry up to 290 passengers. “We are very pleased with the performance of the airplane during the Function & Reliability and Extended Operations testing over the last month,” said Scott Fancher, vice president and general manager of the…