The ground proximity warning system has the following modes (GPWS of different models will be different, but these modes are * * * connected. English words capitalized in brackets are voice warnings):
1, the decline is too large: "sinking rate" and "pulling up".
2. Excessive obstacle-crossing rate: "terrain ... terrain" and "pull up".
3. When the plane takes off or spirals and climbs, the altitude value of the plane drops excessively: "Don't sink".
4. Insufficient distance from ground obstacles (landing gear is not down or flap is less than 30 degrees, etc.). ): Too low terrain, too low gear and too low flap.
5. The error between the instrument and the glide slope is too large: "glide slope".
6. When an airplane encounters windshear, the warning signals are "Be careful, windshear" and "windshear, windshear, windshear".
7. Alarm when the aircraft roll angle is too large: "tilt angle".
8. Reminders during normal descent: "Five Forgets" and "Minimum".
Extended data:
Warning level:
1, warning alarm (caution alarm)
The amber ground proximity warning light is the same as the previous GPWS warning message. Terrain display and specific map announcement display are unique to the new generation EGPWS, and the sound warning is to be careful about the terrain.
2. Warning alarm.
Sound warning, red main warning light and red pull-up light are the same as the warning information of previous GPWS. Terrain display and specific map announcement display are unique to the new generation EGPWS.
3.TCF alarm (TCF alarm)
The response to TCF warning cockpit is to hear voice warning of low terrain and amber proximity warning light (red pull-up light/B737 only).
If the warning occurs during daytime flight, the meteorological conditions (VMC) can be seen and the crew can visually judge that there is no danger, then the warning can be ignored and only used as a warning; Otherwise, follow the warning, TCF or warning procedures provided.
Baidu Encyclopedia-Near Earth Warning