Why Do Airliners Takeoff With Reduced Thrust?

Simple Flying

The reduced takeoff thrust procedure increases engine durability, lowers maintenance costs, and increases engine reliability.

Photo: Boeing

Reduced-thrust takeoff increases engine durability by reducing operational stress and minimizing temperatures in the turbines, ultimately extending the serviceable life of the engine.
Maximum structural takeoff weight must never be exceeded, as it is determined by aircraft structure resistance criteria, landing gear resistance, and impact criteria during landing.
Reduced-thrust takeoff is not recommended on contaminated runways or in the presence of wind shear, as it can result in loss of speed and potentially dangerous situations.