Garmin G1000 Piper PA-46 Matrix - Manual (Page 375)

190-01108-00 Rev. B Garmin G1000 Pilot’s Guide for the Piper PA-46 Mirage/Matrix 361
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
TERRAIN-SVS does not provide the following:
• Premature Descent Alerting (PDA)
• Excessive Descent Rate (EDR)
• Negative Climb Rate (NCR)
• Descent to 500 Feet Callout (DFC)
TERRAIN-SVS requires the following components to operate properly:
• Valid 3-D GPS position
• Valid terrain/obstacle database
TERRAIN-SVS displays altitudes of terrain and obstructions relative to the aircraft position and altitude with
reference to a database that may contain inaccuracies. Terrain and obstructions are shown only if they are in the
database. Terrain and obstacle information should be used as an aid to situational awareness. They should never
be used to navigate or maneuver around terrain.
Note that all obstructions may not be available in the terrain and obstacle database. No terrain and obstacle
information is shown without a valid 3-D GPS position.
The G1000 GPS receiver provides the horizontal position and altitude. GPS altitude is derived from satellite
position. GPS altitude is then converted to a mean sea level (MSL)-based altitude (GPS-MSL altitude) and is used
to determine terrain and obstacle proximity. GPS-MSL altitude accuracy is affected by satellite geometry, but is
not subject to variations in pressure and temperature that normally affect pressure altitude sensors. GPS-MSL
altitude does not require local altimeter settings to determine MSL altitude. It is a widely-used MSL altitude
source.
Terrain and obstacle databases are referenced to MSL. Using the GPS position and altitude, the TERRAIN-SVS
feature portrays a 3-D picture of the surrounding terrain and obstacles relative to the position and altitude of the
aircraft. GPS position and GPS-MSL altitude are used to calculate and predict the aircraft’s flight path in relation
to the surrounding terrain and obstacles. In this way, the pilot can view predicted dangerous terrain and obstacle
conditions.
DISPLAYING TERRAIN-SVS DATA
TERRAIN-SVS uses yellow (caution) and red (warning) to depict terrain and obstacles with heights greater
than 200 feet above ground level, AGL. Alerts are given relative to aircraft altitude. Colors are adjusted
automatically as the aircraft altitude changes. The colors and symbols shown in the figure and table below are
used to represent terrain, obstacles, and potential impact points.