Lire http://www.columbian.com/news/2014/sep/02/777-may-replace-air-force-one/

Extraits

Flying Air Force One is expensive. In 2012, the Congressional Research Service estimated it cost $179,750 per hour to operate. In 2013, it jumped to $228,000 per hour.

So, for taxpayers, it may be better for the Pentagon to switch to the more fuel efficient Boeing 777.

Other governments are doing just that. The Japanese government is trading in its 747s for the 777X, which is as spacious as the 747 and costs less to fly. It will pay an estimated $832 million for the jets, which will go into service in 2019.