What notification appears on the EADI in case of pitch or roll attitude failure?

The notification that appears on the Electronic Attitude Director Indicator (EADI) in the event of a pitch or roll attitude failure is "ATTITUDE FAIL." This message is critical for pilots as it indicates a malfunction in the attitude reference system, which is essential for maintaining awareness of the aircraft's orientation relative to the horizon.

When "ATTITUDE FAIL" is displayed, pilots must take immediate action to confirm the status of the aircraft and may need to rely on alternative instruments or backup systems to ensure safe operation. This message specifically indicates that the normal readings for pitch and roll are no longer valid, prompting the need for heightened situational awareness and potential corrective measures.

Understanding this notification's importance helps pilots recognize and respond effectively to issues with the aircraft's navigation and control systems, ensuring safety and operational integrity.