Which display shows navigation data and routes?

• A. The electronic flight instrument system (EFIS)
• B. The engine performance monitor
• C. The altitude indicator
• D. The airspeed indicator

Answer: (A)

The electronic flight instrument system (EFIS) is specifically designed to display a variety of critical flight information, including navigation data and routes. This system integrates multiple displays to present information such as the aircraft's position relative to its intended flight path, waypoints, and the current heading, along with other information like altitude and airspeed.

The EFIS provides pilots with a comprehensive view of navigation data, enabling them to manage their routes efficiently and effectively. It utilizes visual aids, including maps and symbols, to highlight the route and any deviations, making it easier for pilots to follow their planned trajectory.

Other instruments like the engine performance monitor, altitude indicator, and airspeed indicator are focused on specific aspects of flight performance—engine metrics, altitude information, and speed respectively—but do not provide the holistic navigation data and routing information that the EFIS offers.