What is a clearway?

A clearway refers to a rectangular area off the departure end of the runway that is free of obstacles and serves to provide safety during an aircraft’s takeoff. This area is part of the airport's runway safety design that allows an aircraft to gain the necessary altitude in the event of an engine failure after takeoff. The clearway must be free of any obstacles to ensure that the aircraft can climb safely and achieve the required performance.

The concept of a clearway is critical in aerodrome design and operations since it enhances safety by allowing aircraft a space to climb safely after liftoff. The inclusion of a clearway in an airport's layout is governed by certain regulations and performance criteria set forth by aviation authorities to ensure that it meets the necessary dimensions and conditions.