Garmin G1000 Maintenance Manual

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G1000 System Maintenance Manual Page 3-5
190-00903-00 Rev. A
3.6 GDC 74B AIR DATA COMPUTER
Figure 3-8. GDC 74B Air Data Computer
The GDC 74B processes data from the pitot/static system as well as the OAT probe. This LRU
provides pressure altitude, airspeed, vertical speed and OAT information to the G1000 system,
and communicates with the on-side GIA 63W, on-side GDU and on-side GRS 77 using an
ARINC 429 digital interface. The GDC 74B is designed to operate in Reduced Vertical
Separation Minimum (RVSM) airspace.
3.7 GEA 71 ENGINE/AIRFRAME UNIT
Figure 3-9. GEA 71 Engine/Airframe Unit
The GEA 71receives and processes signals from the engine and airframe sensors. This LRU
communicates with both GIA 63Ws using an RS-485 digital interface.

Garmin G1000 Specifications

General

Display Type	LCD
Primary Flight Display (PFD)	Yes
Multi-Function Display (MFD)	Yes
Terrain Awareness	Yes
Autopilot Integration	Yes
Integrated Flight Deck System	Yes
Weather Radar	Optional
Traffic Advisory System (TAS)	Optional
Terrain Awareness and Warning System (TAWS)	Yes
Resolution	1024 x 768 pixels
Weather Data	Yes
Navigation	Yes
AHRS	Yes
Air Data Computer (ADC)	Yes
Interfaces	ARINC 429, RS-232
Certification	TSO certified
Traffic Information	Optional (requires ADS-B or TCAS)