TAWS Visual Annunciations and Voice Alerts
The system issues alerts when flight conditions meet parameters that are set within TAWS software algorithms. The system issues terrain/obstacle alerts as a caution or warning severity level. Alerts include visual annunciations and voice alerts.
When the system issues an alert, annunciations appear on the PFW and the map. The PFW shows the annunciation to the right of the airspeed tape and displays the alert in a Terrain Alert window below the HSI. The potential impact areas are displayed on the MFW 'Map'.
Voice Alerts (or Voice Call Outs (VCOs)) will be heard from 500 feet down to 50 feet and if a radio altimeter is installed and configured VCOs will continue below 50 feet down to one foot.
For single pilot aircraft the 'Split COM' function will remove aural alerts from the passenger and co-pilot headsets.
|
Alert Type |
TAWS-B Visual Annunciation |
Adaptive Terrain Visual Annunciation |
Voice Alert |
|---|---|---|---|
|
Reduced Required Terrain Clearance (RTC) Warning |
 |
 |
"Terrain Terrain - Pull Up Pull Up" |
|
Imminent Terrain Impact (ITI) Warning |
 |
|
"Terrain Ahead - Pull Up" |
|
Reduced Required Obstacle Clearance (ROC) Warning |
 |
|
"Obstacle - Pull Up" |
|
Imminent Obstacle Impact (IOI) Warning |
|
|
"Warning - Obstacle Obstacle" |
|
Required Line Clearance (RLC) Warning |
 |
|
"Wire Wire - Pull Up Pull Up" |
|
Imminent Line Impact (ILI) Warning |
 |
|
"Warning - Wire Wire" |
|
Reduced Required Terrain Clearance (RTC) Caution |
 |
 |
"Too Low - Terrain" |
|
Imminent Terrain Impact (ITI) Caution |
 |
|
"Caution Terrain - Caution Terrain" |
|
Reduced Required Obstacle Clearance (ROC) Caution |
 |
|
"Caution - Obstacle Obstacle" |
|
Imminent Obstacle Impact (IOI) Caution |
|
|
"Obstacle Ahead" |
|
Required Line Clearance (RLC) Caution |
 |
|
"Caution - Wire" |
|
Imminent Line Impact (ILI) Caution |
|
|
"Wire Ahead" |