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G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Revision 1
190-00716-01
2.1.17
GWX 68 Weather Radar
The GWX 68 Airborne Weather Radar provides weather radar data output to the GDU 1500 MFD. The
GWX 68 is mounted forward of the forward bulkhead at F.S. 30. Power to the GWX 68 is received from
Left Gen Avionics Bus. Data received from the GWX 68 is routed through the GDL 69A data link unit to
the MFD via high-speed data bus (Ethernet).
Figure 2-17, Weather Radar
2.1.18
GSA 80 Servos and GSM 86 Servo Gearboxes (3)
The Garmin GFC 700 AFCS uses GSA 80 high torque servos to control aircraft pitch, pitch trim and roll.
The pitch trim variant of the GSA 80 is a high speed servo actuator. The GSA 80 contains a motor-control
and monitor circuit board, as well as a solenoid and a brushless DC motor. The GSA 80 servo receives serial
RS-485 data packets from the GIA 63Ws. The roll servo is located in the forward cabin lower fuselage near
the wing front spar. The pitch and pitch trim servos are located in the tail. Power to the servos is received
from No. 2 Triple Fed Bus. All servos mount to Garmin GSM 86 Servo Gearboxes. The GSM 86 is
responsible for transferring the output torque of the GSA 80 servo actuators to the mechanical flight control
surface linkage.
Figure 2-18, GSA 80 / GSM 86
Summary of Contents for Cessna Caravan G1000
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