System Status - Garmin Cirrus Perspective SR20 Pilot's Manual

HAZARD AVOIDANCE

SYSTEM STATUS

During power-up, TAWS-B conducts a self-test of its aural and visual annunciations. The system test can also
be manually initiated. A single chime is issued at test completion. TAWS-B System Testing is disabled when
ground speed exceeds 30 knots.
System Test in Progress
System Test Pass
TAWS System Test Fail
Manually testing the TAWS-B System:
1) Select the TAWS-B Page.
2) Press the MENU Key (Figure 6-120).
3) Select 'Test TAWS System' and press the ENT Key to confirm the selection.
TAWS-B continually monitors several system-critical items such as database validity, hardware status, and
GPS status. If the terrain/obstacle database is not available, the aural message "TAWS System Failure" is
generated along with the 'TAWS FAIL' alert annunciation.
TAWS-B requires a 3-D GPS navigation solution along with specific vertical accuracy minimums. Should the
navigation solution become degraded or if the aircraft is out of the database coverage area, the annunciation
'TAWS N/A' is generated in the annunciation window and on the TAWS-B Page. The aural message "TAWS
Not Available" is generated. When the GPS signal integrity is restored and the aircraft is within the database
coverage area, the aural message "TAWS Available" is generated.
Cirrus Perspective
396
PFD/MFD Alert
Alert Type
Annunciation
None
Table 6-19 TAWS-B System Test Status Annunciations
Figure 6-120 TAWS-B Page Menu
by Garmin – Pilot's Guide for the SR20/SR22SR22T
™
TAWS-B Page
Aural Message
Annunciation
TAWS TEST None
None Single Chime
TAWS FAIL
"TAWS System Failure"
190-00820-08 Rev. A