In aeronautics, the final approach (also called the final leg and final approach leg[1]) is the last leg in an aircraft's approach to landing, when the aircraft is lined up with the runway and descending for landing.[2] In aviation radio terminology, it is often shortened to "final".
In a standard airport landing pattern, which is usually used under visual meteorological conditions (VMC), aircraft turns from base leg to final within one-half to two miles of the airport. For instrument approaches, as well as approaches into a controlled airfield under visual flight rules (VFR), often a "straight-in" final approach is used, where all the other legs are dispensed within. Straight-in approaches are discouraged at non-towered airports in the United States.[3]