Designated speeds for aircraft operations, such as V1 (takeoff decision speed), V2 (takeoff safety speed), and Vr (rotation speed).
A system of lights on the side of an airport runway threshold that provides visual descent guidance information during the approach to a runway.
A set of regulations under which a pilot operates an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going.
A type of short-range radio navigation system for aircraft, enabling aircraft to determine their position and stay on course.
An instrument that displays the rate of climb or descent of an aircraft.
