Maintenance Messages
Maintenance messages are triggered when there is a major system issue (e.g., mismatched software). The System Messages Button will flash (white and black inverse video) when a maintenance message persists while the aircraft is on the ground only. While in flight these messages provide supplemental information that provide a reference to a condition that is already alerted somewhere else in the system.
To navigate to the maintenance messages touch the System Messages Button > Maintenance Tab. A numerical visual indication on the Maintenance Tab will indicate the amount of maintenance messages present for the system.
| Maintenance Message Alert Text | Description |
|---|---|
| AHRS 1/2/3 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| OAT Module Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| SFD 1/2 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| AOA Indicator Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GAD 27 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Radio AGL Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Pitch Servo Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Roll Servo Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Yaw Servo Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Pitch Trim Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Roll Trim Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Autopilot Controller 1/2 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Remote GPS Receiver Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Audio Panel Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Magnetometer 1/2/3 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| Engine Instrumentation 1/2 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| COM 1/2 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| <Display ID> Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GAD 29 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 50 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 51 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 52 Software Mismatch: Use Software Update Tool to Resolve | Software reported by the specified LRU does not match the version expected by the system. This must be corrected by an installer qualified for maintenance of the aircraft. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 50 Software Mismatch: Use Garmin Pilot to update GDL software | Software reported by the specified LRU does not match the version expected by the system. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 51 Software Mismatch: Use Garmin Pilot to update GDL software | Software reported by the specified LRU does not match the version expected by the system. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GDL 52 Software Mismatch: Use Garmin Pilot to update GDL software | Software reported by the specified LRU does not match the version expected by the system. Use software update tool in configuration mode to update the unit to the appropriate version. |
| GAD 29 Fault: Remote A429 Interface Failed | The ARINC 429 interface for the system is reporting a fault. This may result in lost data transfer to and from an external navigator. Primary navigation indications provide more specific information to the pilot relating to the availability of each navigation source. |
| AHRS1/2/3 Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| OAT Module Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Autopilot Controller 1/2 Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Pitch Servo Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Roll Servo Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Yaw Servo Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Pitch Trim Servo Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Roll Trim Servo Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Remote GPS Receiver Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Audio Panel Hardware Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Magnetometer 1/2/3 Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| EIS 1/2 Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| COM 1/2 Fault: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| [Display ID] Configuration Module Fault: See Device Application for further information | The specified display cannot communicate with its associated configuration module. |
| Transponder Fault Detected: See Device Application for further information | The specified LRU is reporting a unit fault. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Transponder Configuration Error: See Device Application for further information | The specified LRU is reporting a software configuration error. Use the Devices Application in configuration mode for more information. Contact Garmin Aviation support if necessary to troubleshoot this error. |
| Pitch Trim Fault: Trim output overcurrent | GSA 28 servos are capable of driving electric trim motors. The electric trim motor can draw up to 1A of current. This message is displayed if the electric trim motor is drawing more than 1 A of current from the GSA 28. |
| Roll Trim Fault: Trim output overcurrent | |
| Yaw Trim Fault: Trim output overcurrent | |
| Roll Servo Fault: Temperature Out Of Range | The specified unit has exceeded its operating temperature range. Do not rely on unit for flight. |
| Pitch Servo Fault: Temperature Out Of Range | |
| Yaw Servo Fault: Temperature Out Of Range | |
| Pitch Trim Servo Fault: Temperature Out Of Range | |
| Roll Trim Servo Fault: Temperature Out Of Range | |
| EIS 1/2 Temperature Fault: Temperature Out Of Range | A Temperature Fault has been detected in the specified EIS unit. This is specific to the EIS controller, and not specifically a temperature sensor connected to the EIS unit. |
| AHRS 1/2/3 Fault: Temperature Out Of Range | A Temperature Fault has been detected in the specified AHRS unit. While continued operation may be possible, the unit is operating beyond its intended temperature range, which may lead to a loss of function. |
| Remote GPS Receiver Battery Low: GPS May be slow to acquire Signal | The internal battery for a connected GPS 20A GPS 20A remote GPS receiver is low. GPS acquisition times may be extended. |
| GPS Receiver Battery Low: GPS May be slow to acquire Signal | The internal battery for a AXIS™ display is depleted, which will result in slow GPS acquisition times. |
| USB-C drive is invalid or failed: Use FAT32 format or try another unit | Cannot establish normal communication with a connected USB-C drive. |
| [Display ID] Needs Service: N/A | The AXIS Display hardware needs serviced. Contact Garmin Aviation support for troubleshooting. |
| [Display ID] GPS Receiver Needs Service: N/A | The GPS Receiver hardware of the AXIS Display needs serviced. Contact Garmin Aviation support for troubleshooting. |
| [Display ID] GPS Antenna Shorted to ground: Use alternate navigation method | The GPS Antenna is shorted. Inspect GPS antenna wiring and connections. |
| [Display ID] GPS Antenna Not Connected: Use alternate navigation method | No GPS data is being received. Inspect GPS antenna wiring and connections. |
| Wireless Module Fault: Bluetooth Not Available | A fault condition exists in the wireless module of the AXIS display. Wireless connectivity function may be impacted. |
| VNAV Configuration Error: Vertical Navigation not available | VNAV configuration parameters are misconfigured. Verify the configuration settings. |
| Audio Alert Fail: Audio Database Missing or Invalid | Reload databases to the system. If problem persist, contact Garmin for additional troubleshooting. |
| Manifest Fault Detected: Restart System into config mode for more info | The system has failed to load critical software version information. Rebooting the system into configuration mode resolves this issue. |
| <Display ID> External LRU Power Output Failed: Excessive Current Draw | An external LRU has an excessive current draw. To troubleshoot, 1) power cycle the system. 2) check configuration settings of the LRU against the STC IM. 3) verify wiring of the unit. 4) if condition persists, replace unit. |
| TAWS INHIB: TAWS Discrete Input Active | TAWS INHIBIT is active, the system will not display TAWS alerts. To enable TAWS alerts, press or switch the TAWS INHIB switch or pushbutton. |
| [APP NAME] App Failed: Use alternate source | [APP NAME] App has failed. Power cycle the unit. If the condition persists, contact Garmin Aviation support to troubleshoot this error. |
| Magnetic Anomaly Detected: Magnetic Interference Present in Vicinity of GMU | The magnetometer has detected a magnetic field that is not consistent with that generated by the natural earth magnetic field. This is the result of interference in the area of the magnetometer. While continued operation may be possible, the unit should be serviced by an installer qualified for maintenance on the aircraft prior to continued reliance on this unit for operations. |
| ADAHRS1/2/3 OAT Input Missing: Outside air temperature may be unavailable | The ADAHRS source (GSU) is not receiving OAT data. OAT may be unavailable. Inspect OAT probe wiring and connector. Check OAT status on the ADAHRS LRU device page. If condition persists, replace OAT probe. |
| CO Monitor: Expired | GCO 14 has exceeded expiration date |
| CO Monitor: Expiring Soon | GCO 14 is within 30 days of its expiration date. |
| Audio Device Conflict: Intercom enabled on more than one unit | Intercom is enabled on more than 1 GTR radio in the system. Only 1 intercom can exist in the system. Use the Devices application to resolve this conflict. |
| Databus Fault: AHRS 1/2/3 Using Backup Datapath | GSU 25 ADAHRS units can be connected to the system via 2 independent data paths to ensure critical flight data is available if one of the paths fail. The primary path has failed, and the system is using the backup data path. |
| Redundancy Reduced: AHRS 1/2/3 Backup Datapath Failed | GSU 25 ADAHRS units can be connected to the system via 2 independent data paths to ensure critical flight data is available if one of the paths fail. If the backup data path has failed, the system has no means to route GSU 25 data in the event of a primary databus failure. |
| Databus Fault: EIS 1/2 Using Backup Datapath | GEA 24 units can be connected to the system via 2 independent data paths to ensure critical engine data is available if one of the paths fail. The primary path has failed, and the system is using the backup data path. |
| Redundancy Reduced: EIS 1/2 Backup Datapath Failed | GEA 24 units can be connected to the system via 2 independent data paths to ensure critical engine data is available if one of the paths fail. If the backup data path has failed, the system has no means to route GEA 24 data in the event of a primary databus failure. |
| Power Fault: EIS 1/2 Primary Power Fail | The primary power input has failed on the specified EIS unit. The unit is operating on the secondary backup power input. |
| EIS 1/2 Configuration Fault: Use Configuration Mode to Resolve | The specified LRU is reporting a configuration fault. Troubleshoot using the following steps: 1) Power cycle the unit. 2) check configuration settings of the reporting LRU. 3) Reload configuration file. 4) If condition perists, return unit. |
| EIS 1/2 Calibration Fault: See Device Application for further information | The specified LRU is reporting a calibration fault. Use the Devices Application in configuration mode for more information. Power cycle the unit. If condition persists, return unit. |
| EIS 1/2 Fault: Unit Reset | The GEA has detected a fault. The unit should power cycle by itself to correct the issue. If the condition persists, power cycle manually. Contact Garmin Aviation support to further troubleshoot. |
| Glideslope 1/2 needs service.: Return unit for repair. | Cycle power to the unit. If problem persists, replace unit. |
| Transponder in Test Mode: Do not use for flight or ground operations | An integrated transponder is reporting it is operating in Test mode. |
| Transponder in Demo Mode: Do not use for flight or ground operations | An integrated transponder is reporting it is operating in Demo mode. |
| Transponder in Ground Test Mode: Do not use for flight or ground operations | An integrated transponder is reporting it is operating in Ground Test mode. |
| ADS-B Weather Receiver Failed: Use Alternate Source | Use alternate weather data source if available. Inspect wiring of weather receiver to troubleshoot this error. |
| XPDR Config Sync Error: Restart to configuration mode to restore | Restart the XPDR or GDU into config mode. |
| Not Receiving Data from GDL 5X Receiver: ADS-B In data Unavailable | The system is not receiving data from a connected GDL 50, 51 or 52. Associated weather and/or traffic data is not available. |
| Not Receiving Data from SXM Receiver: SXM Data Unavailable | The system is not receiving data from a connected GDL 69. Associated Sirius XM data is not available. |
| AFCS Preflight Test Failed: Autopilot Unavailable | AFCS preflight test has failed. Ensure autopilot components are powered. If condition persists, this must be addressed by qualified maintenance personnel. |
| GPS1/2 Config Error: Receiving GPS1/2 data from <> | The system is receiving GPS data from an unexpected source. Verify GPS Configuration settings. If condition persists, inspect GPS source wiring to the GDU. |
| Timer Expired: [Dynamic Text] | A set timer has reached its set limit, the dynamic text will display the elapsed time since expiration. |
| SurfaceWatch Fail: Invalid configurable alerts | The SurfaceWatch™ system has failed due to invalid configurable alerts. |
| SurfaceWatch Fail: Invalid Audio Configuration | The SurfaceWatch system has failed due to an invalid audio configuration. |
| Display Redundancy Reduced: Communication Fault | AXIS Display units communicate via CAN and HSDB. This message represents a condition in which the CAN path has failed between displays, resulting in a reduced capacity to share information across the display units. Verify CAN wiring and configuration. |
| Audio Board Configuration Error: Use configuration mode to resolve | Verify audio configuration settings. |
| Remote Configuration Mismatch: Loading configuration to [LRU] | Software reported by the specified LRU does not match the version expected by the system. Use software update tool in configuration mode to update the unit to the appropriate version. |