Pilot's Guide

190-00663-03 Rev. A
Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi
1
SYSTEM OVERVIEW
SECTION 1 SYSTEM OVERVIEW
1.1 SYSTEM DESCRIPTION
This section provides an overview of the G1000 Integrated Flight Deck as installed in the Beechcraft C90A/
GT/GTi. The G1000 system is an integrated flight control system that presents flight instrumentation, position,
navigation, communication, and identification information to the pilot through large-format displays. The system
consists of the following Line Replaceable Units (LRUs):
• GDU 1040A Primary Flight Display (PFD)
• GDU 1500 Multi Function Display (MFD)
• GIA 63W Integrated Avionics Unit
• GDC 74B Air Data Computer (ADC)
• GEA 71 Engine/Airframe Unit
• GRS 77/7800 Attitude and Heading Reference
System (AHRS)(GRS 7800 is optional)
• GMU 44 Magnetometer
• GMA 1347D/1347D-20 Dual Audio System with
Integrated Marker Beacon Receiver
• GTX 33/33(ES) Extended Squitter Mode S
Transponder
• GDL 69A Satellite Data Link Receiver
• GWX 70 Weather Radar
• GCU 475 MFD Control Unit
• GMC 710 AFCS Control Unit
• GTP 59 Outside Air Temperature (OAT) Probe
• GSA 80/81 AFCS Servos
• GSM 85A Servo Gearboxes
A top-level G1000 system block diagram is shown in Figure 1-1 (it does not include the GSM 85A).
NOTE: Refer to the AFCS section for details on the Garmin AFCS.
In the Beechcraft C90A/GT/GTi, the Garmin Automated Flight Control System (AFCS) provides the flight
director (FD), autopilot (AP), and yaw damper (YD) functions of the G1000 system.