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Page 5-108
G1000 System Maintenance Manual
Rev. A
190-00903-00
5.1.9.4.1 GFC
Pre-Flight Testing Procedure
1.
System initializing, verify GFC powered. This step checks to ensure the GFC is powered up.
Ensure the GIA is connected to the autopilot disconnect on the GFC Configuration page.
Ensure all configured servos are communicating on the System Status page.
2.
System initializing, verify GIA audio is valid. This step checks to ensure the GIA audio
region has been loaded and configured. Load GIA audio files to correct.
3.
System initializing, verify required servos are configured. This step checks to ensure the
current servo configuration matches the servo configuration specified in the certification gain
file. Reload the gain files to correct.
4.
System initializing, verify selected side. This step checks to ensure the PFD is online and
sending the selected AFCS side data over HSDB to the GIA. Ensure the PFD is turned on.
Ensure the Ethernet connection from the PFD to the GIA is functioning.
5.
System initializing, verify AHRS monitor. This step checks to ensure the AHRS monitor is
valid and not reporting an AHRS failure. NOTE: AHRS monitor will be assumed valid if on
the ground. Ensure the GRS 77 and GDC 74B are turned on and sending valid data.
6.
System initializing, verify configured servos are valid. This step checks to ensure that none
of the servos are reporting any type of failure. Note that trim servos will report a failure on
stuck MET switches. Ensure MET switch is not stuck. Cycle power on all servos.
7.
System initializing, verify cross GIA valid. This step checks to ensure the cross-side GIA is
online and communicating with all servos from ARINC 485 data lines. The cross-side GIA
must also pass its AHRS monitoring. Ensure both GIAs are online and communicating with
all servos.
8.
Verify cross GIA initialized. This step checks to ensure the cross-side GIA is initialized.
Cycle power on all servos and GIAs. Ensure the PFD1/2 and MFD are turned on.
9.
Verify servo type. This step checks to ensure the servos are correct type. Verify servos are
correct type.
10.
Verify servo first certification data. This step checks to ensure the servos and the GIAs have
the same certification gains. Reload the certification gains to all GIAs and servos.
11.
Verify servo second certification data. This step checks to ensure the servos and the GIAs
have the same certification gains. Reload the certification gains to all GIAs and servos.
12.
Updating servo RTC. This step sets the servo system time to the GIA system time.
13.
Verify servo PFT status. This step checks to ensure all servos have passed their own pre-
flight test.
14.
Verify AP disconnect enabled. This step checks to ensure GIA 1, GIA 2, and all servos are
connected to the 28 volt autopilot disconnect. Ensure the autopilot disconnect is connected to
all GIAs and servos and is registering 28 volts. Ensure the autopilot disconnect switch is not
pressed.
15.
Verify servo validity. This step checks to ensure all servos are online and communicating
with valid data. Ensure all servos are turned on and communicating.
16.
Verify cross GIA PFT is completed. This step checks to ensure the cross-side GIA is also on
step 14. Cycle power on all servos and GIAs. Ensure the PFD1/2 and MFD are turned on.
17.
PFT completed. The pre-flight test is successfully completed.
18.
PFT failed. The pre-flight test has failed.
