The altitude on which the aircraft is kept is 9-12 km. Optimal routes are selected based on weather conditions, the duration of the flight, the distance to the destination and the technical features of the liner. The ideal altitude of the flight is selected by the dispatcher depending on the weather conditions. Often air traffic controllers use the rule of “corridor”: aircraft flying to the east, southeast, northeast keep at altitudes of 9 and 11 kilometers; those that keep going in the direction of the west, south-west and north-west, use the corridor 10 and 12 kilometers above the ground. Based on this, the dispatchers of air carriers choose the optimal corridor and level of the route.
All air traffic controllers monitor the full flight cycle, from take-off to landing. The control is carried out from the headquarters, with the help of special equipment, the data on the location of the vessel, the quality of the operation of the ship systems, the corridor of motion and weather conditions along the way are displayed on the screen. The dispatcher’s task is to keep in touch with the aircraft and react quickly in case of problems. Above the level of 12 thousand meters, airliners usually do not rise: because of the sparseness of the air, the flight will be unstable, the engine power at such an altitude will drop with a corresponding increase in fuel consumption.

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