Garmin G1000 Socata TBM 850 - Manual (Page 84)

Garmin G1000 Pilot’s Guide for the Socata TBM 850 190-00709-00 Rev. A 2-30
FLIGHT INSTRUMENTS
2.3 PFD ANNUNCIATIONS AND ALERTING FUNCTIONS
The following annunciations and alerting functions are displayed on the PFD. Refer to the Engine/Airframe
Systems Section for information on the Crew Alerting System (CAS) and to Appendix A for more information on
alerts and annunciations.
SYSTEM ALERTING
The System Messages Window conveys messages to the flight crew regarding problems with the G1000
System. When a new message is issued, the MSG Softkey flashes to alert the flight crew. It continues to flash
until pressed, which opens the System Messages Window and acknowledges the message(s) which initiated the
flashing. When the window is open, acknowledged messages turn gray. Messages generated while the window
is open are not automatically displayed, but cause the MSG Softkey to begin flashing again. Pressing the MSG
Softkey while the System Messages Window is open closes the window.
Critical values generated by redundant sensors are monitored by comparators. If differences in the sensors
exceed a specified amount, the Comparator Window appears in the upper right corner of the PFD and the
discrepancy is annunciated in the Comparator Window as a ‘MISCOMP’ (miscompare). If one or both of the
sensed values are unavailable, it is annunciated as a ‘NO COMP’ (no compare).
Reversionary sensor selection is annunciated in a window on the right side of the PFD. These annunciations
reflect reversionary sensors selected on one or both PFDs. Pressing the SENSOR Softkey accesses the ADC1,
ADC2, AHRS1, and AHRS2 softkeys. These softkeys allow switching of the sensors being viewed on each
PFD. With certain types of sensor failures, the system may make some sensor selections automatically. The GPS
sensor cannot be switched manually.
Softkey
Flashes for
New System
Message
System
Messages
Window
Reversionary
Sensor
Window
Comparator
Window
Figure 2-43 G1000 Alerting System