What is the key purpose of the EADI in flight operations?

The primary purpose of the Electronic Attitude Director Indicator (EADI) is to display the aircraft's attitude relative to the horizon. This means it shows whether the wings are level or if the aircraft is climbing, descending, or turning. The EADI is crucial for pilots as it provides critical information about the aircraft's orientation in three-dimensional space, which is essential for flying in various conditions, especially when visual references are limited, such as in clouds or at night.

In flight operations, maintaining proper aircraft attitude is vital for safe maneuvering and maintaining control. The EADI assists pilots in making informed decisions regarding climbs, descents, and turns, enhancing situational awareness and contributing to overall flight safety.

While the other options are important aspects of flight instruments, they do not reflect the primary function of the EADI itself. Indicating airspeed, showing altitude, and providing navigation data are facilitated by other instruments within the cockpit.