The role of aircraft support gradually changed after 1975, as jet aircraft began using cross polar routes.

This polar route would not have been a cold water trip as the climate was much warmer then and Greenland was very likely green.

A polar route refers to an aircraft route across the uninhabited polar ice cap regions.

The term "polar route" was originally more general, being applied to great circle routes between Europe and the west coast of North America in the 1950s.

China also plans to introduce ground-to-air communications and automatic dependent surveillance services for international and polar routes in the west.

The scheduled time is 15 hours and 55 minutes, gate to gate, but now, using the polar route, it generally arrives early.

In 1954 SAS was the first airline to schedule a polar route.

Charles's report to Pan Am made it clear that the technology for a polar route was far from ready.

It is estimated to cost about $100,000 each time such a flight is diverted from a polar route.

The six-plane B-2 sortie had passed its final turn points along its 3,000-mile polar route.