During which phase of flight are flaps typically extended?

Flaps are extended primarily during the takeoff and landing phases of flight. The extension of flaps reduces the stall speed of the aircraft, which allows it to fly safely at lower speeds. This is particularly important during takeoff, as it provides additional lift at lower airspeeds, enabling the aircraft to break ground sooner and requiring less runway distance. During landing, flaps help to increase lift while allowing for a slower approach speed, improving control and stability as the aircraft descends toward the runway.

These benefits provided by flap extension during takeoff and landing significantly enhance safety and performance. In contrast, extending flaps during cruise could create drag and reduce overall efficiency, while using flaps during aerobatics can interfere with control and maneuverability. Maintenance does not involve the operational use of flaps in flight but may include inspections or adjustments when the aircraft is not in flight.