Getting the takeoff airspeed requires full throttle. Once the aircraft is off the ground and the gear can be safely retracted, the pilot can reduce the takeoff power to a more efficient climb speed. You never run any engine the full 100% when not required.

Contrary to popular belief, pilots rarely use full throttle (Maximum Thrust) for takeoff in 2026. Most departures utilize "Reduced Thrust" or "Derated Takeoff" settings. This high-value operational strategy is used to extend the life of the engines, reduce maintenance costs, and save fuel. By using only as much power as is "required" based on the aircraft's weight, runway length, and current weather conditions (calculated by a tablet-based performance tool), the airline reduces heat and mechanical stress on engine components. Full throttle is typically reserved for "Performance-Limited" scenarios, such as very short runways, contaminated surfaces (snow/ice), high-altitude airports on hot days, or if there is a risk of windshear. A peer-to-peer insight: if your takeoff feels "gentle," it simply means the pilots have determined that full power is unnecessary for safety, though 100% of the engine's power is always available in an instant if a problem occurs during the climb.