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Appendix A
TAWS Alerts
Alert Type
TAWS Page
Annunciation
Pop-Up Alert Aural Message
Imminent Terrain Impact (ITI) Caution
or
“Terrain Ahead; Terrain Ahead”
or
“Caution, Terrain; Caution, Terrain”
Imminent Obstacle Impact (IOI) Warning
or
“Obstacle Ahead, Pull Up; Obstacle Ahead, Pull
Up”
or
“Obstacle, Obstacle; Pull Up, Pull Up”
Premature Descent Alert (PDA) Caution “Too Low, Terrain”
Negative Climb Rate (NCR) Caution
or
“Don’t Sink”
or
“Too Low, Terrain”
Altitude Callout “500”
None None
“Five-Hundred”
NOTE: TAWS Caution Alerts
are displayed as constant black text on a yellow background; TAWS Warning Alerts are displayed as
constant white text on a red background.
TAWS Alerts Summary (continued)