Garmin Software Version 0321.23 Handbuch Seite 262

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Page 8-10 G1000 System Maintenance Manual – Diamond DA40/40F
Revision G 190-00545-01
8.3 GFC 700 Ground Checkout
The following procedures verify the proper operation of the GFC 700 AFCS, after maintenance has been
performed. The technician performing these checks should be thoroughly familiar with the G1000 and
GFC 700 by studying the following references:
G1000/DA40 Cockpit Reference Guide, Garmin P/N 190-00324-11
Airplane Flight Manual Supplement: G1000 Integrated Avionics System with GFC 700
Automatic Flight Control System – Diamond Model DA40 & DA40F,
Garmin P/N 190-00492-10
8.3.1 Pre-Flight Test
1. Power down the G1000 system using the Avionics Master, then the BAT-side aircraft master
switch. If a ground power unit is being used, it too must be powered off. Wait 30 seconds then
restore power to the system. The GFC 700 will begin an automatic pre-flight test after AHRS and
ADC parameters become valid.
2. Verify that a white ‘PFT’ annunciation is displayed on the PFD, as shown in Figure 8-4.
Figure 8-4. Pre-Flight Test
NOTE
A red AFCS (
) annunciation may be displayed momentarily before PFT starts.
This indicates that the Autopilot and Manual Electric Trim are not available (due to
AHRS initialization, GFC 700 system failure, power loss, or because PFT has not been
performed)
3. Upon successful completion of the test, an aural alert will sound and the annunciation will clear.
For even-interval system power-up, the aural alert is generated by GIA 63 #1, whereas odd-
interval system power-ups are generated GIA 63 #2.
4. Repeat Step 1 to test the PFT aural alert for the opposite GIA 63.
5. Continue to Section 8.3.2. (If the ‘PFT’ annunciation turns red, the test has failed).
6. If the aural alert is not heard, but pre-flight testing passed, engage the Autopilot by pressing the
AP key and disengage the Autopilot by pressing the AP key again. Visual and aural disconnect
alerting should occur. If no alert is heard, the audio interface between the GIA and audio panel
should be checked.
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