190-02207-A2
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
Rev. 3
Page 2-3
2.1.2 GNX 375
The GNX 375 is a panel-mounted 2-inch GPS navigator and transponder. The GNX 375 features a
capacitive touch-screen, full-color moving map display,
Power/home
button, dual concentric rotary knob
with push entry, SD card slot, and photocell. The GNX 375 has the same capabilities as the GPS 175, plus
a Mode S transponder and ADS-B receiver. The internal AHRS sensor cannot be used to drive anything
other than the display of attitude on a non-certified PED. The built-in Bluetooth will allow flight plan I/O,
GPS position, and ADS-B Weather/Traffic interface with a PED but will not allow software or database
loading. The GPS navigation function is capable of providing TSO-C146e compliant GPS/WAAS
navigation for en route, terminal, non-precision and precision capabilities (LPV) when interfaced with a
CDI. The bezel of the GNX 375 is 2 inches x 6.25 inches and is designed to fit in the same location as older
2-inch avionics, such as GTX 327.
Figure 2-2 GNX 375 System Diagram
Display
OBS Resolver
Audio Panel
Discretes
Autopilot
CDI
GNX 375
GAE 12
(Optional)
GPS
Antenna
Installed per
this STC
Existing
Equipment
Legend
Transponder
Antenna
Fuel/Air Data
Computer
FS 510
(Optional)
