What is the minimum required altitude for use of the AFCS during takeoff?

The minimum required altitude for the use of the Automatic Flight Control System (AFCS) during takeoff in the CRJ 200 is 600 feet above ground level (AGL). This altitude is established to ensure that the aircraft has achieved a safe and stable flight profile before engaging the automated systems. Below this altitude, aircraft response can be unpredictable due to variable aircraft performance influenced by the takeoff configuration, initial climb, and other factors such as terrain and obstacles in the vicinity.

By delaying the engagement of the AFCS until reaching 600 feet AGL, pilots ensure that the aircraft is in a more predictable and stable flight mode, with adequate climb performance established. This altitude serves as a buffer to allow for any manual adjustments that may be necessary before transitioning to automated flight.