Garmin GNC 355 User Manual (English)

Other manuals for Garmin GNC 355

Maintenance Manual95 pages

Service Bulletin10 pages

Questions and Answers:

S
Stephanie GuerreroSep 5, 2025
Why is my Garmin GNX 375 not receiving heading from compass system?
- S
  Steven ChangSep 5, 2025
  If your Garmin GNX 375 is not receiving heading from the compass system (ARINC 429 heading input), the issue could stem from an incorrect ARINC 429 input speed setting or incorrect wiring connections. Verify the ARINC 429 input port speed setting for the device it's connected to. Also, check the wiring connections; the raw data being received by the GNX 375 can be monitored on the ARINC Inputs page found on the Diagnostics page.
S
Suzanne SchaeferSep 7, 2025
Why is my Garmin GNC 355 not receiving heading from compass system?
- C
  Claudia PrinceSep 7, 2025
  If your Garmin GNC 355 is not receiving heading from the compass system (ARINC 429 heading input), this could be due to an incorrect ARINC 429 input speed setting or incorrect wiring connections. Check the ARINC 429 input port speed setting for the device and verify it is correct. You should also check the wiring connections; the raw data being received by the GNC 355 can be monitored on the ARINC Inputs page found on the Diagnostics page.
T
Tyler Williams DDSSep 8, 2025
Why won't my Garmin GNC 355 GPS 175 OBS resolver calibrate?
- J
  Jeffrey BrownSep 8, 2025
  If your Garmin GPS 175 OBS resolver won't calibrate, the issue is likely due to an incompatible resolver or an improper connection. Check the resolver specifications and wiring to ensure they are correct.
B
Bethany RoblesSep 10, 2025
Why won't my Garmin GNX 375 OBS resolver calibrate?
- R
  Russell NorrisSep 12, 2025
  If your Garmin GNX 375 OBS resolver won't calibrate, the issue is likely due to an incompatible resolver or an improper connection. Check the resolver specifications and wiring to ensure they are correct.

Garmin GNC 355 Specifications

General

Channels	200
Interface	RS-232
GPS Receiver	WAAS
Connectivity	Bluetooth
Display Type	Color
Approaches	LPV/LNAV/VNAV/GPS

Summary

System at a Glance

Overview

General description of the GPS 175, GNC 355/355A, and GNX 375 navigators and their features.

Pilot Interface

Details the physical components and controls of the unit, including bezel, touchscreen, knobs, and keys.

Compatible Equipment

Lists required and optional Line Replaceable Units (LRUs) and interfaces compatible with the system.

Get Started

Power Up

Describes the initial power-on sequence, software versions, and database status checks.

Databases

Explains database updates via SD card or Flight Stream, supported types, and effective cycles.

Connectivity

Details how Connext works via Bluetooth, enabling features like GPS position and flight plan transfer.

Navigation

Map

Explains the map display features, aircraft symbol, track vector, basemap, and overlays.

Active Flight Plan

Details how current flight plan information is displayed as a scrolling list on the Active Flight Plan page.

Direct To

Explains how to set a course to any waypoint using the Direct To function with various selection methods.

Waypoints

Describes database and user waypoints, including search functions and specific page features.

Procedures

Explains how to load and manage departure, arrival, and approach procedures for flight plans.

Planning

Vertical Calculator

Describes how to calculate time to TOD and vertical speed required to reach a target altitude.

Fuel Planning

Explains how to view and compute fuel conditions along a flight plan or between waypoints.

DALT/TAS/Wind Calculator

Details how to calculate density altitude, true airspeed, and winds based on input variables.

RAIM Prediction

Explains how to determine GPS coverage availability and predict fault detection integrity.

Hazard Awareness

Weather Awareness

Covers FIS-B weather products, display, data limitations, and reception.

Traffic Awareness

Explains ADS-B In traffic applications (AIRB, ATAS, SURF), features, and display.

Terrain Awareness

Details terrain and obstacle depictions, including color shading, proximity, and alerting functions.

Messages

Advisory Messages

Explains system-related messages, their display, logging, and message key.

Database Advisories

Lists advisories related to database issues, their conditions, and corrective actions.

Flight Plan Advisories

Covers advisories for flight plan import, storage, and changes, with corrective actions.

GPS/WAAS Advisories

Details advisories for GPS receiver issues, loss of integrity, and navigation errors.

System Hardware Advisories

Lists advisories for hardware faults, temperature issues, data loss, and component failures.

Qualification

Glove Qualification

Explains how to qualify gloves for touchscreen use, including selection considerations and guidance.

Regulatory Information

Compliance

States that the Garmin unit meets FAA AC 90-100A requirements for RNAV operations.

Related product manuals

Garmin GPS 400W,GNC 420W