Input for the primary attitude and heading display is provided by which system?

The primary attitude and heading display receives its input from the Attitude Heading Reference System (AHRS). This system is crucial because it provides the aircraft's orientation in terms of pitch, roll, and yaw as well as heading information. The AHRS uses a combination of sensors, including accelerometers and gyroscopes, to calculate the aircraft's attitude in real-time, ensuring pilots have accurate visuals of the aircraft's position relative to the earth's horizon.

Utilizing this system guarantees that the display offers vital information for navigation and control, especially during critical phases of flight. The reliance on AHRS is critical since other options, like the flight management system or global positioning system, serve different functions primarily associated with navigation or route management rather than direct attitude and heading input. This distinction is key to understanding the role of various onboard systems in flight operations.