User Guide

6 Garmin G1000 Pilot’s Training Guide Instructor’s Reference 190-00368-06 Rev. A
Exercise 1.2: Component Review
1. Define the following equipment abbreviations and acronyms:
• AHRS
An Attitude and Heading Reference System is a solid-state electrical gyro system.
• ADC
An Air Data Computer calculates and digitizes pitot, static, and temperature inputs.
• TIS
The Traffic Information Service is Mode S-carried traffic awareness FAA service.
• TAWS
Terrain Awareness and Warning System is a TSO-C151b, Class B, certified optional
feature on the G1000, designed to increase situational awareness and aid in reducing
Controlled Flight into Terrain (CFIT).
• AFCS
An Automatic Flight Control System provides pitch/roll steering guidance and sends
commands to an autopilot to operate the flight control surfaces.
2. Describe the function of the following components of the G1000 Integrated Flight Deck:
• GRS 77
The Attitude and Heading Reference System (AHRS) provides aircraft attitude and
heading information to the Primary Flight Display (PFD) and the primary Integrated
Avionics Unit (IAU; GIA #1). The AHRS contains advanced sensors (including
accelerometers and rate sensors) and interfaces with the Magnetometer to obtain magnetic
field information, with the ADC to obtain air data, and with both IAUs to obtain GPS
information.
• GMU 74
The tri-axis magnetometer measures local magnetic field and sends data to the AHRS for
processing to determine aircraft magnetic heading. This unit receives power directly from
the AHRS.
• GIA 63
The Integrated Avionics Units (IAU) function as the main communications hub, linking
all LRUs with the PFD. Each IAU contains VHF COM/NAV/GS receivers and system
integration microprocessors.
• GDU 10XX
Primary Flight and Multi Function displays (PFD and MFD) show flight instruments
and navigation information, respectively. GDU number may differ depending on aircraft
installation.
• GTX 33
The solid-state Transponder provides Modes A, C, and S capability.