Touchscreen Controller Failure; Ahrs Operation - Garmin G2000 Pilot's Manual

SyStem overview

toucHScreen controller Failure

If the Touchscreen Controller fails, the MFD continues to display what was shown prior to the failure of the
Touchscreen Controller. Most functions normally performed exclusively on the Touchscreen Controller will be
unavailable.
The PFD Controller is used to control communications and navigation radios, fl ight planning functions, and
procedure selection and activation on the PFD. Refer to the Audio and CNS and Flight Management sections
for information on using the PFD controller to perform these functions.

aHrS operation

Refer to Appendix A for specifi c AHRS alert information.
note:
Aggressive maneuvering while AHRS is not operating normally may degrade AHRS accuracy.
note:
In addition to using internal sensors, the GRS 77 AHRS uses GPS information, magnetic fi eld data and air
data to assist in attitude/heading calculations. In normal mode, the AHRS relies upon GPS and magnetic fi eld
measurements. If either of these external measurements is unavailable or invalid, the AHRS uses air data
information for attitude determination. Four AHRS modes of operation are available (see Figure 1-28) and
depend upon the combination of available sensor inputs. Loss of air data, GPS, or magnetometer sensor inputs
is communicated to the pilot by system message alerts.
Mag Data Available and Reliable?
Y Y
E E
S S
AHRS Normal
Mode
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GPS Data Available and Reliable?
Y Y
E E
S S
N N
O O
Air Data Available and Reliable?
Y Y
N N
E E
O O
S S
AHRS no-Mag AHRS no-Mag/
Mode no-Air Mode
Heading Invalid Heading Invalid
Figure 1-28 AHRS Operation
Garmin G2000 Pilot's Guide for the Cessna T240
N N
O O
Mag Data AND Air Data
Available and Reliable?
Y Y N N
O O
E E
S S
AHRS no-GPS AHRS coast-on-gyros
Mode until invalid
Attitude/Heading Invalid
190-01263-01 Rev. A