Investigators of a deadly Boeing 787 crash "are studying possible dual engine failure as a scenario that prevented the Boeing Co. 787 jet from staying airborne," reports Bloomberg:Pilots from the airline reenacted the doomed aircraft's parameters in a flight simulator, including with the landing gear deployed and the wing flaps retracted, and found those settings alone didn't cause a crash, according to people familiar with the investigation. [Also, analysis of the wreckage "suggests the wing flaps and slats, which help an aircraft increase lift during takeoff, were extended correctly."] The result, alongside the previous discovery that an emergency-power turbine deployed seconds before impact, has reinforced the focus on a technical failure as one possible cause, said the people, who asked not to be identified discussing nonpublic deliberations... [The turbine deploys "in the case of electrical failure," the article points out, and "was activated before the plane crashed, according to previous findings. That fan helps provide the aircraft with vital power, though it's far too small to generate any lift."] Pilots who reviewed the footage have pointed to the fact that the landing gear was already partially tilted forward, suggesting the cockpit crew had initiated the retraction sequence of the wheels. At the same time, the landing-gear doors had not opened, which pilots say might mean that the aircraft experienced a loss of power or a hydraulic failure — again pointing to possible issues with the engines that provide the aircraft's electricity.Read more of this story at Slashdot.