User Guide

190-00494-00 Rev. B
Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang
7-1
AFCS
SECTION 7 AUTOMATIC FLIGHT CONTROL SYSTEM
7.1 AFCS OVERVIEW
NOTE: The approved Airplane Flight Manual (AFM) always supersedes this Pilot’s Guide.
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 to support this system
description. GFC 700 AFCS functionality in the Cessna Citation Mustang is distributed across the following
Line Replaceable Units (LRUs):
• GDU 1040A Primary Flight Displays (PFDs) (2)
• GMC 710 AFCS Control Unit
• GIA 63W Integrated Avionics Units (IAUs) (2)
• GSA 80 AFCS Servos (2)
• GSA 81 AFCS Servos (2)
• GSM 85A Servo Mounts (4)
The GFC 700 AFCS can be divided into these main operating functions:
• Flight Director (FD) — The Cessna Citation Mustang has two flight directors, each operating within an IAU
and referred to as pilot-side and copilot-side. Commands for the selected flight director are displayed on both
PFDs.
The flight director provides:
– Command Bars showing pitch/roll guidance
– Vertical/lateral mode selection and processing
– Autopilot communication
• Autopilot (AP) — Autopilot operation occurs within the pitch, roll, and pitch trim servos. It also provides
servo monitoring and automatic flight control in response to flight director steering commands, Attitude and
Heading Reference System (AHRS) attitude and rate information, and airspeed.
• Yaw Damper (YD) — The yaw servo is self-monitoring and provides Dutch roll damping and turn coordina-
tion in response to yaw rate, roll angle, vertical acceleration, and airspeed.
• Manual Electric Pitch Trim (MEPT) — The pitch trim servo provides manual electric pitch trim capability
when the autopilot is not engaged.