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Ground Proximity Warning System
Also from: GPWS
GPWS warnings are overridden by stall or windshear warnings. Inputs are:
Warnings
| Mode | Description | Aural | Visual |
| 1 | excessive rate of descent | SINK RATE or PULL UP | GPWS |
| 2A (flaps not in landing config) | excessive terrain closure rate | TERRAIN × 2, then PULL UP | GPWS |
| 2B (flaps in landing config) | TERRAIN | ||
| 3 | altitude loss after takeoff | DON'T SINK | GPWS |
| 4A (landing gear and flaps not in landing config) | unsafe terrain clearance | TOO LOW GEAR or TOO LOW TERRAIN | GPWS |
| 4B (landing gear down and flaps not in landing config) | TOO LOW GEAR or TOO LOW FLAPS or TOO LOW TERRAIN | ||
| 4C (landing gear up or flaps not in landing config) | TOO LOW TERRAIN | ||
| 5 | descent below glideslope | GLIDE SLOPE | G/S |