When does number 1 reduce power during an interval takeoff?

During an interval takeoff, number one reduces power at 160 KIAS to allow for a safe and controlled spacing between aircraft while ensuring they continue to climb efficiently. This speed provides sufficient altitude and airspeed for the aircraft to maintain a healthy climb performance while allowing the following aircraft to establish their own spacing in relation to number one.

The 160 KIAS reduction is a critical aspect of ensuring safety and proper formation flying, as it helps manage the dynamics of the flight and provides sufficient room for number two to follow through the takeoff stage. This coordination is essential to maintain formation integrity and minimize the risk of wake turbulence encounters that can occur during the climb phase after takeoff.