SINGAPORE, One of the most important asian airline, Singapore Airlines, has finalized its decision to became the launch customer for Airbus A3XX mega-aircraft. It will buy ten aircrafts and has taken oprtions for 15 more, for a value of the deal, including firm orders and options, worth USD8.6 billion. The announcement came as a blow to U.S. Boeing, which had been aggressively marketing its own "new"...