At what altitude must the autopilot engagement take place?

Autopilot engagement in the ERJ 170/175 is mandated to occur above 400 feet AGL (Above Ground Level) after takeoff. This requirement ensures that the aircraft has achieved a sufficient altitude to allow for a safer and more stable flight environment before the autopilot takes control.

Engaging the autopilot too low, such as below this threshold, can increase the risk of pilot workload and may not provide the necessary altitude to effectively manage the aircraft’s flight parameters. By waiting until the aircraft has reached 400 feet AGL, pilots can assure that they are beyond the critical phases of takeoff and better positioned to hand over flight control to the autopilot system with greater safety margins. This procedure aligns with operational safety practices and enhances situational awareness during early flight phases.