Garmin G1000 Mooney M20TN - Manual (Page 328)

Garmin G1000 Pilot’s Guide for the Mooney M20M/M20R/M20TN 190-00647-02 Rev. A 314
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
TERRAIN-SVS 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 “Terrain System Failure” is
generated along with the ‘TER FAIL’ alert annunciation.
TERRAIN-SVS 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 ‘TER N/A’ is generated in the annunciation window and on the TERRAIN-SVS Page. The aural
message “Terrain System Not Available” is generated. When the GPS signal is re-established and the aircraft
is within the database coverage area, the aural message “Terrain System Available” is generated.
Alert Type
PFD/MFD Alert
Annunciation
Aural Message
No GPS position
Excessively degraded GPS signal
“Terrain System Not Available”
GPS signal re-established None “Terrain System Available”
Table 6-9 TERRAIN-SVS Status Annunciations
6.5 TERRAIN AWARENESS AND WARNING SYSTEM (TAWS)
WARNING: Do not use TAWS information for primary terrain avoidance. TAWS is intended only to enhance
situational awareness.
NOTE: The data contained in the TAWS databases comes from government agencies. Garmin accurately
processes and cross-validates the data but cannot guarantee the accuracy and completeness of the data.
TAWS (Terrain Awareness and Warning System) is an optional feature to increase situational awareness and aid
in reducing controlled flight into terrain (CFIT). TAWS provides visual and aural annunciations when terrain and
obstacles are within the given altitude threshold from the aircraft. The displayed alerts and warnings are advisory
in nature only.
TAWS satisfies TSO-C151b Class B requirements for certification. Class B TAWS is required for all Part 91
aircraft operations with six or more passenger seats and for Part 135 turbine aircraft operations with six to nine
passenger seats (FAR Parts 91.223, 135.154).
TAWS requires the following to operate properly:
• A valid terrain/obstacle/airport terrain database
• A valid 3-D GPS position solution
TAWS uses terrain and obstacle information supplied by government sources. Terrain information is based on
terrain elevation information in a database that may contain inaccuracies. Individual obstructions may be shown
if available in the database. The data undergoes verification by Garmin to confirm accuracy of the content, per