GPS 500 Pilot’s Guide and Reference
11-5
SECTION 11
TAWS
Table 11-2 shows the possible TAWS alert types with corresponding annunciations and aural messages.
Alert Type
TAWS Page
Annunciation
Pop-Up Alert
Aural Message
Excessive Descent Rate (EDR) Warning
“Pull Up”
Reduced Required Terrain Clearance
(RTC) Warning
*
or
“Terrain, Terrain; Pull Up, Pull Up”*
or
“Terrain Ahead, Pull Up; Terrain Ahead, Pull Up”
Imminent Terrain Impact (ITI) Warning
*
or
Terrain Ahead, Pull Up; Terrain Ahead, Pull Up’*
or
“Terrain, Terrain; Pull Up, Pull Up”
Reduced Required Obstacle Clearance
(ROC) Warning
*
or
“Obstacle, Obstacle; Pull Up, Pull Up”*
or
“Obstacle Ahead, Pull Up; Obstacle Ahead, Pull Up”
Imminent Obstacle Impact (IOI)
Warning
*
or
“Obstacle Ahead, Pull Up; Obstacle Ahead, Pull Up”*
or
“Obstacle, Obstacle; Pull Up, Pull Up”
Reduced Required Terrain Clearance
(RTC) Caution
*
or
“Caution, Terrain; Caution, Terrain”*
or
“Terrain Ahead; Terrain Ahead”
Imminent Terrain Impact (ITI) Caution
*
or
“Terrain Ahead; Terrain Ahead”*
or
“Caution, Terrain; Caution, Terrain”
Reduced Required Obstacle Clearance
(ROC) Caution
*
or
“Caution, Obstacle; Caution, Obstacle”*
or
“Obstacle Ahead; Obstacle Ahead”
Imminent Obstacle Impact (IOI) Caution
*
or
“Obstacle Ahead; Obstacle Ahead”*
or
“Caution, Obstacle; Caution, Obstacle”
Premature Descent Alert (PDA) Caution
“Too Low, Terrain”
Altitude Callout “500”
None
None
“Five-Hundred”
Excessive Descent Rate (EDR) Caution
“Sink Rate”
Negative Climb Rate (NCR) Caution
*
or
“Don’t Sink”*
or
“Too Low, Terrain”
Table 11-2 TAWS Alerts Summary
*
Indicates the default configuration
190-00181-60 Rev. G
Summary of Contents for GPS 500
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