What to do if my Garmin G300 GPS airspeed or altitude shows a Red-X condition?
If your Garmin GPS airspeed and/or altitude shows a Red-X condition, inspect the GSU 73 pitot/static plumbing integrity and the pitot/static ports and associated equipment. If the problem continues, replace the GSU 73 with a known good unit.
What to do if TAS and/or OAT indications are dashed out on my Garmin GPS?
If TAS (True Airspeed) and/or OAT (Outside Air Temperature) indications are dashed out on your Garmin GPS, check the GTP 59 OAT probe wiring and connection for faults. Also, check the GSU 73 configuration module wiring for damage and replace it if necessary. If the issue remains, replace the GTP 59 OAT probe. If the problem persists, replace the GSU 73 with a known good unit.
Why am I getting Red-X failures on the heading of my Garmin GPS?
If you are experiencing Red-X failures on the heading of your Garmin GPS, check the following while the aircraft is on the ground. When taxiing without reliable GPS information, heading performance is susceptible to the presence of magnetic anomalies. Check for any newly installed equipment on the aircraft. Inspect wiring/connector issues between the GSU 73 and GMU 44 before replacing either unit.
How to fix Crosstalk Error on Garmin G300 (Dual or Three Screen Systems)?
To resolve the Crosstalk Error on your Garmin GPS dual or three screen systems, ensure both displays are running the same software version to clear the issue.
General| Category | GPS |
|---|---|
| Manufacturer | Garmin |
| Water Resistance | Yes |
| Water Rating | IPX7 |
| Connectivity | Bluetooth |
| Receiver | High-sensitivity GPS |
Details the Line Replaceable Units (LRUs) of the G300 system, including GDUs and GSUs.
Explains the function and operation of the various controls and buttons on the G300 unit.
Discusses normal and reversionary display operation, system annunciations, and AHRS operation.
Details the airspeed indicator display, including the moving tape, trend vector, and color-coded speed ranges.
Explains the attitude indicator display, showing pitch, roll, and slip/skid information with horizon line.
Describes the altimeter display, barometric setting, and selected altitude indication.
Provides an overview of GPS navigation, map displays, and orientation options on the G300.
Explains how to use various map displays, including airports, NAVAIDs, and map pointer information.
Details the three different map orientation options: North Up, Track Up, and Desired Track Up.
Explains the process of building and managing flight plans on the G300 system.
Guides the user through creating active and stored flight plans, including inserting waypoints.
Covers adding waypoints, editing speed, fuel, name, and deleting flight plans.
Details the activation and use of XM Satellite Weather services for aviation weather information.
Explains terrain and obstacle information display, including alerts and setup options for situational awareness.
Describes Synthetic Vision, a 3D forward-looking display enhancing situational awareness with terrain and flight path data.
Provides detailed taxiway, runway, and ramp information for airports, aiding ground control navigation.
Offers on-board electronic terminal procedure charts for rapid access to essential airport information.
Covers the controls and operation of the integrated autopilot system, including modes and engagement.
Lists and describes the vertical modes of the autopilot, such as Pitch Hold, Altitude Hold, and Vertical Speed.
Details the lateral modes of the autopilot, including Roll Hold, Heading, and Navigation modes.
Lists and explains miscellaneous system messages and advisories displayed by the G300 for pilot awareness.
Explains how to access and interpret system status messages and alerts displayed on the INFO page.
Details the aural alerts for terrain, obstacle, and descent rate, categorized by severity.
Defines the various data fields that can be displayed in the data bar for flight information.
Lists and defines data fields available for display on the INFO page in dual display configurations.
Explains how to view and manage recorded flight details, including maps of flight paths.
Describes the electronic breadcrumb trail, its settings, and how to display, save, edit, or clear it.
Covers using the system for pre-flight weight and balance calculations to verify aircraft conditions.
Provides instructions for installing and removing SD cards for software and database updates.
Lists the databases included with the G300, such as Basemap, AOPA, FliteCharts, and Terrain.
Guides on obtaining and installing database updates from the flyGarmin website using an SD card.
Describes the system behavior and display changes when the G300 loses GPS signal.
Explains how red 'X' flags indicate LRU failures and system initialization status.
Details pitch attitude warnings with red chevrons and decluttered data fields during extreme pitch events.
Illustrates and defines the standard symbols used for VFR airports and Navaids on the map display.
Illustrates and defines the standard symbols used for IFR airports, Navaids, and airways on the map.
Defines symbols used to represent different types of airspace classes and boundaries on the map display.
Contact information for Garmin product support and general inquiries.
Outlines the terms and conditions for using the embedded software, including licensing and intellectual property rights.
Details the warranty coverage for Garmin G300 LRUs, including duration and conditions for repair or replacement.
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