190-00962-02 Rev. A
Garmin G1000 Pilot’s Guide for the Diamond DA42NG
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AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
SECTION 7 AUTOMATIC FLIGHT CONTROL SYSTEM
NOTE:
The approved Airplane Flight Manual (AFM) always supersedes the information in this Pilot’s Guide.
NOTE:
A failure of the primary (#1) Integrated Avionics Unit (IAU) results in loss of the flight director. Any
IAU failure results in loss of the autopilot and manual electric trim.
The GFC 700 is a digital Automatic Flight Control System (AFCS), fully integrated within the G1000 System
avionics architecture. The System Overview section provides a block diagram (Figure 1-1) to support this system
description. GFC 700 AFCS functionality in Diamond DA42NG aircraft is distributed across the following Line
Replaceable Units (LRUs):
• GDU 1040 Primary Flight Display (PFD)
• GDU 1045 Multi-Function Display (MFD)
• GIA 63W Integrated Avionics Units (2)
• GSA 80 AFCS Yaw Damper Servo (1)
• GSA 81 AFCS Servo (3)
• GSM 85 or GSM 86 Servo Mounts (4)
The GFC 700 AFCS can be divided into these main operating functions:
•
Flight Director (FD)
— Flight director operation takes place within the primary (#1) IAU. Flight director
commands are displayed on the PFD. The flight director provides:
– Command Bars showing pitch/roll guidance
– Pitch/roll mode selection and processing
– Autopilot communication
•
Autopilot (AP)
— Autopilot operation occurs within the pitch, roll, and pitch trim servo and provides servo
monitoring and automatic flight control in response to flight director steering commands, AHRS attitude and
rate information, and airspeed.
•
Yaw Damper (YD
) — The yaw servo is self-monitoring and provides Dutch roll damping and turn
coordination in response to yaw rate, roll angle, vertical acceleration, and airspeed.
•
Manual Electric Trim (MET)
— The pitch trim servo provides manual electric trim capability when the
autopilot is not engaged.
