What is the recommended time duration for advancing throttles during a takeoff?

The recommended time duration for advancing throttles during a takeoff is 1-3 seconds because this range allows for a smooth and controlled increase in engine power, reducing the risk of sudden thrust changes that could lead to loss of control or engine strain. Advancing the throttles too quickly can result in excessive yaw or pitch changes, while a prolonged advancement could lead to unnecessary wear on the engines. This time frame balances the need for responsiveness and safety, ensuring that the aircraft reaches takeoff power progressively and the pilot can monitor engine performance effectively during this critical phase of flight.