One of the world’s most exclusive customers could be the last buyer of the aircraft that democratised long-haul air travel after the US defence department selected Boeing’s 747-8 to be the US president’s new Air Force One.

The fleet of presidential aircraft, due to enter service later this decade, could be among the very last passenger versions of the long-haul aircraft to be built because airlines increasingly favour two-engine long-haul aircraft over four-engine craft.

The new aircraft will replace a pair of 747-200s that came into service as the presidential aircraft in 1990, during the presidency of George HW Bush. The type became an all but inevitable choice after the Pentagon decided that the presidential aircraft needed to have four engines. The only other currently manufactured four-engine long-haul jet is Airbus’s A380, manufactured in France.