Aircraft Trivia: Jet aircraft are designed so that they cannot back up even if they reverse thrust.

Airplanes cannot back up on their own to depart. 

After all passengers have boarded, the plane slowly backs up and leaves the passenger terminal, heading for the runway.

At this point, the plane is not actually running backward.

A tow truck pulls the plane and backs it backward.

Unlike cars and other vehicles, airplanes are not powered by engines to move the wheels or any other special power to travel on the ground.

How they run on the runway during takeoff and landing is, simply put, by idling the jet engines that propel them through the air.

However, reverse thrust would cause considerable exhaust and noise emissions in the forward direction, and would be extremely dangerous because the cockpit cannot see the rear.

In the past, some models were designed for "back-up operation" with reverse thrust, but today the majority of airplanes do not use reverse thrust.


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