What type of data does the Air Data Computer provide to the Primary Flight Display?

The Air Data Computer (ADC) is responsible for processing various sensory inputs related to atmospheric conditions and the aircraft's performance within those conditions. The primary outputs from the ADC are critical flight parameters, which include airspeed, altitude, and vertical speed. These data points are essential for pilots to monitor the aircraft’s flight status and make informed decisions during all phases of flight.

Airspeed is crucial for controlling the aircraft and maintaining safe operational limits. Altitude data informs the pilots of the aircraft’s height above sea level or ground level, which is vital for navigation and maintaining separation from terrain and other air traffic. Vertical speed indicates how quickly the aircraft is climbing or descending, helping pilots manage ascent and descent rates effectively.

While navigation data, engine performance data, and aircraft attitude are also important for overall aircraft operation and systems functionality, they are not provided specifically by the Air Data Computer to the Primary Flight Display. Navigation data comes from other systems like the Flight Management System (FMS), engine performance data is relayed from the Engine Indication and Crew Alerting System (EICAS), and aircraft attitude is obtained from the Inertial Reference System (IRS) or gyroscopic instruments. Therefore, the Air Data Computer primarily focuses on the direct atmospheric data needed