What is displayed in the Flight Mode Annunciation (FMA) field on the PFDs?

The Flight Mode Annunciation (FMA) field on the Primary Flight Displays (PFDs) is specifically designed to provide pilots with critical information regarding the current operational modes of the flight guidance systems. This includes indications such as whether the autopilot is engaged, the active flight director modes, and other relevant guidance cues.

Displaying flight guidance modes is essential for pilots to ensure they are aware of the automation level being applied to the flight controls, which directly impacts the management of the aircraft during various phases of flight. When the aircraft transitions between different flight phases—like takeoff, cruise, or landing—the FMA updates to reflect these changes, allowing the pilot to make informed decisions regarding manual or automated flight management.

While altitude and vertical speed, engine parameters, and navigation data are all vital components of flight information, they do not specifically pertain to the FMA field. The FMA's sole focus is on the status and configuration of flight modes, which is crucial for maintaining situational awareness and safe operations in the cockpit.