The EGPWS is a Terrain Awareness and Alerting system providing terrain alerting and display functions with additional features.

The EGPWS uses aircraft inputs including geographic position, attitude, altitude, airspeed, and glideslope deviation. These are used with internal terrain, obstacles, and airport databases to predict a potential conflict between the aircraft flight path and terrain or an obstacle. A terrain or obstacle conflict results in the EGPWS providing a visual and audio caution or warning alert. Additionally, the EGPWS provides alerts for excessive glideslope deviation, too low with flaps or gear not in landing configuration, and optionally provides bank angle and altitude callouts based on system program pin selection. Detection of severe windshear conditions is also provided for selected aircraft types when enabled.

• Reactive wind shear alerting provides visual and aural warnings of impending wind shear via algorithms that can detect increases or decreases in aircraft performance
• Geometric altitude algorithm overcomes barometric altimetry limitations, like cold weather operations
• Peaks display depicting the highest and lowest elevation terrain within the display range at any altitude
• Runway field clearance floor (RFCF) protects against inadvertent landings below airport runway thresholds at airports that are much higher than surrounding terrain
• Reduced nuisance alarms to increase pilot confidence
• Radar autotilt® allows the EGPWS to provide terrain elevation data to compatible radars for controlling the tilt of the radar antenna during its scan
• SmartRunway® and SmartLanding® protect against runway incursions and excursions
• Auto pop-up change from radar to terrain display in the event of a terrain alert, reducing pilot workload during flight
• Altitude callouts of height above terrain or field elevation during final approach
• Optional 8-channel or dual 12-channel internal global positioning system (GPS) card