Which device is primarily responsible for autopilot control in a modern airliner and also monitors flight parameters?

Which device is primarily responsible for autopilot control in a modern airliner and also monitors flight parameters?

• A. Flight Data Recorder
• B. Attitude Indicator
• C. Standby Instrument
• D. Flight Management Computer

Answer: (D)

The key idea is that the Flight Management Computer acts as the brain of the automatic flight control system. It plans the route, computes lateral and vertical guidance, sets performance constraints, and continuously provides guidance commands to the autopilot through the flight control system. At the same time, it monitors flight parameters such as speed, altitude, and flight path to ensure the aircraft stays on the planned profile. The autopilot relies on the instructions from this computer to fly the aircraft automatically and to adhere to the flight plan. The other devices have more limited roles—data recording after flight, simply displaying attitude, or providing a backup instrument. Because of its combination of navigation planning, guidance output, and ongoing parameter monitoring, the Flight Management Computer is the best answer.

The key idea is that the Flight Management Computer acts as the brain of the automatic flight control system. It plans the route, computes lateral and vertical guidance, sets performance constraints, and continuously provides guidance commands to the autopilot through the flight control system. At the same time, it monitors flight parameters such as speed, altitude, and flight path to ensure the aircraft stays on the planned profile. The autopilot relies on the instructions from this computer to fly the aircraft automatically and to adhere to the flight plan. The other devices have more limited roles—data recording after flight, simply displaying attitude, or providing a backup instrument. Because of its combination of navigation planning, guidance output, and ongoing parameter monitoring, the Flight Management Computer is the best answer.