Garmin G1000 Airplane Flight Manual Supplement page 16

AFM SUPPLEMENT
GARMIN G1000 INTEGRATED AVIONICS SYSTEM
7. In an in--flight emergency, depressing and holding the Comm trans-
fer button for 2 seconds will select the emergency frequency of
121.500 MHz, and will show it in the "Active" frequency window.
8. The Attitude, Heading and Reference System (AHRS) requires at
least one GPS or air data input to function properly. In the unlikely
event that both GPS position sources fail, and the air data computer
fails, the AHRS will subsequently lose attitude and heading and the
pilot will be required to use the standby instrumentation. In this
instance, the PFD will not provide altitude, airspeed, attitude, or nav-
igation information
3.1 - - EMERGENCY PROCEDURE CHECKLISTS
Use the electrical fire checklists found in the M20R POH and appropri-
ate AFM supplements.
Electrical System Failures
Alternator Failure
If the Main Alternator fails, indicated by the Master Warning "ALT
VOLTS" is flashing:
Perform the Standby Alternator Emergency Checklist (repeated below)
1. Push the "Stdby Alt/Emergency Bus" switch ON. (This activates the
emergency bus circuitry & Standby Alternator system) Verify:
(a) The AMBER "EMERG BUS" annunciator illuminates, and
(b) The RED "ALT VOLTS" flashing annunciator extinguishes.
The most efficient operating RPM is 2500 RPM when operat-
ing on the Standby Alternator System.
2. All electrical systems will remain powered and functional.
3. If the RED "ALT VOLTS" annunciator remains illuminated, then:
If the RED "ALT VOLTS" annunciation remains illuminated, then
the standby alternator has failed, and only main battery power re-
mains.
4. Reduce the electrical load by pulling the "BAT" circuit breaker. This
load sheds the non--essential bus. The following systems remain
powered by the essential bus.
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FAA APPROVED
NOTE:
-CAUTION-
MOONEY
M20R
ISSUED 11 - 2004
REVISION A 06--2005
REVISION B 03--2006