What is the altitude limit for auto pilot engagement during takeoff?

The altitude limit for autopilot engagement during takeoff is 400 feet. This limit is set to ensure that the pilot maintains adequate manual control of the aircraft during the critical phases of takeoff and initial climb. The period after takeoff is particularly sensitive to any abnormal situation that may arise, and keeping autopilot disengaged until after reaching this altitude allows pilots to better manage the aircraft's performance, especially as it transitions through varying aerodynamic and engine-introduced forces.

While other options present possible altitudes, they do not reflect the operational safety standards that are commonly adhered to in aviation practice. Engaging the autopilot too early, below this specified altitude, may hinder the pilot's ability to respond effectively to any anomalies or changes in flight dynamics during a critical phase of flight. Consequently, the 400-foot altitude threshold is a standard that balances the automation of the aircraft with the need for heightened pilot awareness and control.