Figure 2-3 Gnc 355 System Diagram; Gnc 355 - Garmin GPS 175 Maintenance Manual

2.1.3

GNC 355

The GNC 355 is a panel-mounted 2-inch GPS navigator and COM radio. The GNC 355 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 GNC 355 has the same capabilities as the GPS 175, plus
a VHF COM radio. The GNC 355 has a 25 kHz spacing radio and the GNC 355A has a 8.33 kHz spacing
radio. 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 GNC 355 is
2 inches x 6.25 inches and is designed to fit in the same location as older 2-inch avionics, such as GNC 255
or GTR 225.
Legend
Installed per
this STC
Existing
Equipment
Audio Panel
Display
Autopilot
CDI
190-02207-A2
Rev. 3
COM
Antenna
FS 510
(Optional)
GNC 355( )

Figure 2-3 GNC 355 System Diagram

GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
GPS
Antenna
Fuel/Air Data
Computer
OBS Resolver
Discretes
GTX 345 or GDL 88
Page 2-4