G1000 NXi System Maintenance Manual
Page 380
King Air 300 Series
Revision 1
190-00716-N1
GIA Failure Test
Step
Desired Result
GIA 1 Failure Condition:
1. Ensure GPS satellites are acquired.
2. Open GIA1 primary and secondary CBs.
3. Verify desired results.
4. Close GIA1 primary and secondary CBs. Allow
system to re-acquire satellites and return to
normal display modes.
For a GIA 1 failure condition, the following shall occur:
•
NAV 1 and COM 1 tuning fields on PFD1 and PFD2
are invalid (red X).
•
L/R engine data remains valid
•
XPDR 1 is Inoperative.
•
GMA 1 Is Inoperative.
•
AHRS 1 is using backup GPS source.
•
AHRS 2 not receiving backup GPS Information.
•
An amber BOTH ON GPS2 is displayed on PFD 1
and PFD2.
•
AHRS and ADC data remain valid on PFD 1 and PFD
2.
GIA 2 Failure Condition:
1. Open GIA 2 CB.
2. Verify desired results.
3. Close GIA 2 CB. Allow system to re-acquire
satellites and return to normal display modes.
For a GIA 2 failure condition, the following shall occur:
•
NAV 2 and COM 2 tuning fields on PFD 1 and PFD 2
are invalid (red X).
•
L/R engine data remains valid.
•
XPDR 2 is Inoperative.
•
GMA 2 Is Inoperative.
•
AHRS 2 is using backup GPS source.
•
AHRS 1 not receiving backup GPS Information.
•
An amber BOTH ON GPS1 is displayed on PFD 1
and PFD 2.
•
AHRS and ADC data remain valid on PFD 1 and PFD
2.
Dual GIA Failure Condition:
1. Open GIA 1 primary and secondary CBs and
GIA 2 CB.
2. Check for desired results.
3. Restore power to both GIA units.
For a dual GIA failure, the following shall occur:
•
COM 1/NAV 1 & COM 2/NAV 2 fields flag invalid.
•
GPS CDI flags LOI on PFD
•
NAV 1 & NAV 2 CDI loses deviation bar.
•
XPDR field flags invalid on PFD.
•
Engine Instrument field flags invalid on MFD.
•
All AHRS & ADC fields remain valid.
•
Red AFCS status annunciation given.
•
TAWS FAIL annunciation given.
•
ADF/DME windows flag invalid.*
*If equipped.
Summary of Contents for G1000 NXi
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