Garmin G500 Manual page 30

3.3.2 Caution annunciations – Yellow
Annunciation
CHECK
ATTITUDE
Autopilot will
automatically
disconnect.
Note: Only appears with
the installation of an
optional GAD 43 adapter
MISCOMP
(flag displayed on
PFD attitude,
airspeed, or altitude
indicators)
AHRS ALIGN
Keep Wings Level
NO GPS POSITION
TRAFFIC
No Traffic Data
NO AP DATA
AFMS, GARMIN G500 PFD/MFD SYSTEM
FAA APPROVED
Pilot Action
Fly the aircraft
manually and
crosscheck GDU
620 attitude
indication with
standby attitude
indicator and other
sources of attitude
information
(airspeed, heading,
altitude, etc.)
Cross-check the
flagged information
against other
sources to identify
erroneous
information.
–
Limit aircraft
attitude to ±10º
bank and ±5º pitch
as AHRS Aligns -
OK to taxi.
If the system is
configured with
dual GPS, press the
1-2 button.
Visually acquire the
traffic to see and
avoid.
Use vigilance, as the
traffic sensor is not
able to detect traffic.
Verify autopilot
mode of operation
using alternate
means.
Cause
The GDU 620 attitude
monitors have detected an
AHRS malfunction, or the
inability to actively monitor
the AHRS output.
Difference detected between
displayed attitude, airspeed, or
altitude (dual installations
only).
Attitude and Heading
Reference System is aligning.
AHRS may not align with
excessive pitch/bank angles.
GPS data on the selected
system is no longer valid. The
Moving Map and associated
data are not updating.
The configured traffic system
has determined that nearby
traffic may be a threat to the
aircraft.
The configured traffic system
is not able to detect traffic and
/ or provide the pilot with any
traffic awareness.
Autopilot mode of operation is
not available.
190-01102-01 Rev. 9
Page 30 of 40