Pushback (aviation)
Removal of an aircraft from an airport gate by external power / From Wikipedia, the free encyclopedia
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In aviation, pushback is an airport procedure during which an aircraft is pushed backwards away from its parking position, usually at an airport gate by external power.[1][2] Pushbacks are carried out by special, low-profile vehicles called pushback tractors or tugs.
Although many aircraft are capable of moving themselves backwards on the ground using reverse thrust (a procedure referred to as a powerback),[1] the resulting jet blast or prop wash would cause increased noise, damage to the terminal building or equipment, and can cause injury to airport staff due to flying debris. This debris would also be sucked into the engine, as it is in normal use, and cause excessive wear - a major cause of wear on aircraft engines is during ground use.[3] A pushback is therefore the preferred method when ground-handling aircraft.