This version of Boeing passenger plane development when the late 1980 from the age requirements and volume of people travelling by air increased more every year, including those for commercial airlines around the world, demand for a new generation of aircraft passenger capacity than with saving the old fuel.There are 777 and maintenance operating values lower than other commercial aircraft are sufficiently as to replace older aircraft that started to discharge due to flight hours and replace the passenger aircraft with more than two engines that have higher expenses due to the announcement of Extended Range Twin Engine or ETOPs Operational Performance Standards that are approved, a passenger can fly across the ocean 2 engine.
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