lähestymispoistumiskäytävä

A "lähestymispoistumiskäytävä" is a Finnish term referring to a type of flight procedure in aviation. It translates to "approach departure corridor" or "approach exit corridor." This concept is particularly relevant in air traffic control and airport design.

In essence, a lähestymispoistumiskäytävä defines a specific three-dimensional airspace corridor that an aircraft uses during its transition between en-route flight and arrival at an airport, or conversely, between departure from an airport and its transition to en-route flight. These corridors are designed to manage traffic flow efficiently and safely, separating arriving and departing aircraft and ensuring adequate spacing between them and other air traffic.

The dimensions and specific routing of a lähestymispoistumiskäytävä are determined by factors such as airport layout, runway configuration, surrounding terrain, noise abatement procedures, and air traffic control requirements. They are crucial for maintaining an orderly flow of air traffic, minimizing delays, and ensuring the safety of all operations within the vicinity of an airport. Air traffic controllers use these established corridors to guide aircraft, and pilots are trained to follow them precisely. The precise definition and management of these corridors are fundamental to the safe and efficient operation of any airport.