WASHINGTON, USA, Due to a small amount of orders, Boeing abandoned the possibility of constructing the supejumbo 747X, the aircraft that should have competed with Airbus A-380. Anyway it does not renounce an aircraft able to fly long distances: as a matter of fact, it is projecting a new 747-700, an "increased" version of 747, with a bigger capacity and a further autonomy of 1247 kilometres (about...