Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22SR22T
190-00820-08 Rev. A
396
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
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.
Alert Type
PFD/MFD Alert
Annunciation
TAWS-B Page
Annunciation
Aural Message
System Test in Progress
TAWS TEST
None
System Test Pass
None
None
Single Chime
TAWS System Test Fail
TAWS FAIL
“TAWS System Failure”
Table 6-19 TAWS-B System Test Status Annunciations
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.
Figure 6-120 TAWS-B Page Menu
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.
Summary of Contents for Cirrus Perspective SR20
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