Figure 2-7, Gia Unit; Figure 2-8, Gea Unit - Garmin G1000 Nxi System Maintenance Manual

GEA 71 Engine/Airframe Unit (2)
The Garmin GEA 71 Engine/Airframe Units provide engine/airframe data to the G1000 system.
Data received from transducers/sensors is processed and sent to GIA 63Ws (via RS-485 digital
interface), and subsequently to the GDU 1550 MFD. Engine parameters are normally displayed
on the MFD. In the event of MFD failure, the engine parameters can be displayed on PFD 1
and/or PFD 2 using display reversion. The GEAs are located behind the instrument panel and
is mounted in a vertical orientation. Electrical power to GEA 1 is provided from No. 1 Triple Fed
Bus and to GEA 2 from No. 2 Triple Fed Bus. Both GEA units will power-up immediately with
external or aircraft power or battery operation.
Each GEA interfaces to the following sensors for its onside engine:
•
Oil Pressure Sensor
•
Oil Temperature Sensor
•
Fuel Flow Sensor (via onside Signal Conditioner)
•
Turbine Speed Sensor (via onside Signal Conditioner)
•
Propeller Speed Sensor (via onside Signal Conditioner)
•
Torque Sensor
•
Interstage Turbine Temperature (ITT) Sensor
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1

Figure 2-7, GIA unit

Figure 2-8, GEA unit

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