Gia Failure Test; Display Failure Test - Garmin G1000 NAV III Line Maintenance Manual

5.2 GIA Failure Test

Step
Single GIA Failure Conditions:
1. Remove power from GIA 1.
2. Check for desired results.
3. Restore power to GIA 1. Allow to re-
acquire satellites.
4. Remove power from GIA 2.
5. Check for desired results.
6. Restore power to GIA 2.
Dual GIA Failure Conditions:
1. Remove power from both GIA units.
2. Check for desired results.
3. Restore power to both GIA units.

5.3 Display Failure Test

Step
MFD Display Failure Conditions:
1. Remove power from MFD.
2. Check for desired results.
3. Restore power to MFD.
PFD Display Failure Conditions:
1. Remove power from PFD.
2. Check for desired results.
3. Restore power to PFD.
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Rev. L
Desired Result
GIA 1 Failure - For a GIA 1 failure, only the following shall
flag invalid:
⎫
COM/NAV 1 field.
⎫
NAV 1 CDI loses deviation bar.
GIA 2 Power Failure - For a GIA 2 failure, only the following
shall flag invalid:
⎫
COM/NAV 2 field.
⎫
NAV 2 CDI loses deviation bar.
Dual GIA Failure – For a dual GIA failure, only the following
shall occur:
⎫
COM/NAV 1 & COM/NAV 2 fields flag invalid.
⎫
GPS CDI flags INTEG on PFD.
⎫
NAV 1, 2 CDI loses deviation bar.
⎫
XPDR field flags invalid on PFD.
⎫
Engine Instrument field flags invalid on MFD.
⎫
All AHRS & ADC fields valid.
Desired Result
The following shall occur when power is removed from the
MFD:
⎫
PFD switches to reversion mode.
⎫
Attitude and Heading remain valid from AHRS.
⎫
Airspeed, Altitude, Vertical Speed, and OAT remain valid
from Air Data Computer.
⎫
Engine Instrumentation appears on PFD.
⎫
COM/NAV 2 fields flag invalid.
The following shall occur when power is removed from the
PFD:
⎫
MFD switches to reversion mode.
⎫
Attitude and Heading remain valid from AHRS.
⎫
Airspeed, Altitude, Vertical Speed, and OAT remain valid
from Air Data Computer.
⎫
MFD retains engine instrumentation.
⎫
COM/NAV 1 fields flag invalid.
G1000 Nav III Line Maintenance Manual
190-00352-00