The first official test flight of Boeing’s new 787 took place Tuesday at Paine Field in Everett, Washington. The “Dreamliner” should be more energy-efficient, more silent and it should pollute less than the previous models.

The yesterday flight was almost two years late, but the aircraft successfully took to the skies on Tuesday, after several operational maneuvers performed Saturday. This is the world’s second-largest liner made of special composite materials, in order to make it lighter. The 787 will use 20% less fuel than other large planes and it will produce fewer emissions.

The huge white and blue painted aircraft took off as seen by 25,000 people – Boeing employees, customers and airline executives. The four-hour flight over the Washington state was the first on a program needed for obtaining the certification of Federal Aviation Administration. The program is expected to last about nine months.

There are already 840 orders and the first company to get a Dreamliner will be Japans’s All Nipon Airways (ANA), sometime next year. The delay of yesterday’s historical moment and for delivering the first plane was caused by some ill-fitting parts and other problems. The parts of the plane are produced all over the globe and then transported to Everett for assembling by Boeing.

The current version of 787 will be able to fly 250 passenger about 9,000 miles, in better conditions than before: more comfortable seats, better air quality and larger windows. Depending on the configuration, the 787 could hold up to 330 passengers.