
Page 2-8 G1000 System Maintenance Manual – Diamond DA40/40F
Revision G 190-00545-01
Standard GFC 700:
The Standard GFC 700 with GSM 85 or GSM 86 Servo Gearbox and GSA 81 Servo Actuator
(P/N 011-00878-00) is maintained as the previously certified configuration.
The Standard or Enhanced GFC 700 is a two-axis fail-safe digital flight control system that is integrated
within the G1000 system. The only distinguishing hardware from a non autopilot G1000 installation is
the MFD, the GSA 81 Servos and GSM 85 or GSM 86 Servo Mounts.
The following functions are provided by the GFC 700 in this installation:
• Flight Director
• Autopilot
• Manual Electric Trim
Flight Director:
The Flight Director operates within the #1 GIA 63 and uses data from the G1000 system, including air
data, attitude, and navigation data, to calculate commands for display to the pilot and for the Autopilot.
Flight Director command bars and mode annunciations are sent to the PFD through a high-speed Ethernet
connection for display to the pilot. The Flight Director operates independently of the Autopilot, and
allows the pilot to hand-fly the command bars, if desired.
Autopilot:
The Autopilot operates within the three GSA 81 servos. Flight Director data is processed within the three
servos and turned into aircraft flight control surface commands. The Autopilot cannot operate unless the
Flight Director is engaged.
Manual Electric Trim:
Independent of the Flight Director and Autopilot, Manual Electric Trim (MET) allows the pilot to control
the elevator trim tab by the MET switch located on the pilot control stick. Engaging both sides of the
switch in the same direction causes the autopilot to disengage (if engaged) and drives the pitch trim servo
in the desired direction. The ARM side of the MET switch may also be used to disconnect the autopilot
and cancel the resulting AP DISC alerts.
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