The acronym EFD stands for which term in aviation displays?

• A. Electronic Flight Diagram
• B. External Flight Device
• C. Electronic Flying Device
• D. Electronic Flight Display

Answer: (D)

Electronic Flight Display refers to the cockpit screens that present the aircraft’s flight information in electronic form, replacing traditional analog instruments. In modern glass cockpits, these displays (often including the primary flight display and related screens) show attitude, airspeed, altitude, vertical speed, heading, and navigation data, all in one integrated view. This is why the term EFD is used for the electronic displays that pilots read to monitor and control the flight. The other options describe something different—an electronic diagram of flight, an unrelated external device, or an unrelated electronic flying device—so they don’t match how the acronym is used in aviation displays.