If heading hold is selected while the aircraft is in a bank, what will the AP or F/D do?

When heading hold is selected while the aircraft is in a bank, the autopilot or flight director will guide the aircraft to a wings level position. This function is designed to stabilize the aircraft and ensure that it maintains a straight and level flight path relative to the selected heading. The autopilot will automatically roll the wings level as it tries to return to the desired heading, which is crucial for maintaining control and situational awareness during flight.

Maintaining wings level is particularly important for safety and operational efficiency, especially during critical phases of flight and in response to external factors such as turbulence or changes in airflow. This capability ensures that the pilot has a reliable tool to help manage the aircraft’s direction without the need for constant manual adjustments, promoting a smoother flight experience.