Garmin Service Alerts
Garmin Service Alerts are published to warn users of potential safety issues concerning Garmin products or software and specify corrective action. Garmin encourages its customers to contact their avionics dealer or their company's field-service engineering staff with any questions or concerns regarding these alerts.
Service Alerts
| Subject | Date | Download |
|---|---|---|
| GTN 650/750 Units and OBS Issue | February 1, 2012 | Download PDF |
| Potential GRS 77 and GRS 77H reset | December 2, 2011 | Download PDF |
| GTN 6XX/7XX Units and 'Data Source' Error Messages | December 2, 2011 | Download PDF |
| GTN 6XX/7XX Units and Approaches with Holds/Course Reversals at the Initial Approach Fix | November 28, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Service Bulletin 1149: GTN 6XX/7XX Units and Synchro Heading Input | November 10, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1153: Software Version 6.20 available for GTX 330/330D w/ES | November 9, 2011 | Download PDF |
| Service Advisory 1146: GNS 400W / 500W Series Units and StormscopeŽ Display Issue | September 28, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1145: G600 System?s Software Upgrade for GDU 620 Software Version 5.02, GRS 77 Software Version 3.02, and GDC 74 ADC Software Version 3.08. | September 13, 2011 | Download PDF |
| Service Advisory 1141: Garmin SBAS-capable receivers may experience loss of LPV or LNAV/VNAV capability due to incoherent EGNOS satellite GEO ranging data | August 15, 2011 | Download PDF |
| Service Advisory 1139: G600/G500/G500H Systems Auto-Slewing | August 12, 2011 | Download PDF |
| Service Advisory 1135: Garmin has become aware of a condition that may result in areas without NEXRAD coverage to appear as areas with no radar returns. Additionally, return data may not always be removed from the display after it has expired. | July 18, 2011 | Download PDF |
| This communication informs Garmin aviation customers of forthcoming service document Software Service Bulletin 1120: GDL 69/69A Upgrade to Software Version 4.01. | July 14, 2011 | Download PDF |
| Service Advisory 1137: GTN 6XX/7XX Units Installed with Dual GTX 32 Transponders | July 7, 2011 | Download PDF |
| Service Advisory 1014: G500 and G600 Systems PFD WPT Identifier. Garmin has identified an issue with data displayed in the WPT field, located on the upper left of the PFD. | June 17, 2011 | Download PDF |
| Service Advisory 1029: This service advisory is intended to clarify operational characteristics of the affected products as related to European Geostationary Navigation Overlay Service (EGNOS). | June 13, 2011 | Download PDF |
| Service Advisory 1129: Garmin has become aware of a condition that may cause momentary interruption of GRS 77/77H AHRS and/or GDC 74A/74B/74H Air Data operation. | May 19, 2011 | Download PDF |
| Service Advisory 1123: GTN 635/650/750 Units and COM Transmit Audio Issue | May 13, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Service Bulletin 1126: GTN 7XX/6XX Units with GTS 8xx Traffic Systems. | May 11, 2011 | Download PDF |
| Service Advisory 1121: Flight Plan Depiction on MX20/GMX200 Units when interfaced with GTN 6XX/7XX navigators utilizing software version 2.00. | May 4, 2011 | Download PDF |
| Service Advisory 1118: Momentary failure indications (Red-X) can occur when sorting stored flight plans. | May 3, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1114: G500 Systems Software Upgrade for GDU 620 Software Version 5.01 | April 15, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1115: G600 Systems Software Upgrade for GDU 620 Software Version 5.01 | April 12, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1109: G500H System?s Software Upgrade for GDU 620 Software Version 5.00 and GRS 77 Software Version 3.51. | April 6, 2011 | Download PDF |
| This communication is intended to inform Garmin aviation customers of forthcoming service document Software Service Bulletin 1104: GTS 8XX TCAS/TAS Traffic System Upgrade to Software Version 2.02. | April 4, 2011 | Download PDF |
| Service Advisory 1107: Anomalies in Greenland Terrain Data May Inhibit Operational Capability | March 1, 2011 | Download PDF |
| Service Advisory 1103: An issue has been identified in GTS software versions 2.00 and 2.01. Certain traffic conditions will cause the GTS 8XX to indicate a failure of the traffic advisory system. | February 2, 2011 | Download PDF |
| Service Advisory 1101: Under certain conditions (depending on the geometric shape of the TFR), the GDL 69/69A software version 3.40 or earlier may omit or display incorrectly some TFR information at low zoom levels. | January 14, 2011 | Download PDF |
| Service Advisory 1051: The 2010 IGRF Magnetic Field Model is now available to update as part of navigation database cycle 1013 (and subsequent database cycles). | December 17, 2010 | Download PDF |
| Service Advisory 1047: CDI (Course Deviation Indicator)/HSI (Horizontal Situation Indicator) scaling on a limited number of LNAV/VNAV, and LNAV+V approaches is incorrect. | November 23, 2010 | Download PDF |
| Service Advisory 1042: King Air C90 GFC 700 Localizer Tracking | October 20, 2010 | Download PDF |
| Service Advisory 1041: Garmin has identified an issue with GDL 69/69A software version 3.30 which may cause out of service NEXRAD radar sites to not be displayed as such; instead of displaying the area as out of service, the area may be displayed as clear of weather issues. | October 20, 2010 | Download PDF |
| Service Alert 1027: Certain airplane models on the G500/600 AML, require a maximum airspeed indication (barber pole) that will change based on altitude. | August 12, 2010 | Download PDF |
| Service Advisory 1028: This purpose of this advisory is to call attention to the upcoming amendment to Federal Regulation §92.217 (b): Effective August 11, 2010, it has been amended to require that the transponder and ADS-B Out equipment utilize the same altitude source. | July 21, 2010 | Download PDF |
| Service Advisory 1021: Excess epoxy may be present in the connector of configuration modules with jackscrew type backshells shipped prior to May 2010. The epoxy can prevent the configuration module harness from seating correctly and may result in a poor electrical connection. | July 19, 2010 | Download PDF |
| Service Advisory 1026: Garmin has become aware of an issue regarding G3X GSU 73 software versions prior to 2.13 that may result in incorrect AHRS operation when the pitch/roll offset is greater than zero degrees. | July 19, 2010 | Download PDF |
| Service Alert 1001: Using the standby navigation database feature may result in erroneous navigation information when the standby navigation database is transferred to the active database. | January 27, 2010 | Download PDF |
| Service Advisory 0940: The purpose of this advisory is to describe the need to upgrade GNS 480 (CNX80) units with Software Version 2.0 or earlier to Software Version 2.3. | January 5, 2010 | Download PDF |
| Garmin has identified an issue, whereby the large (outer) BARO knob and the small (inner) CRS knob may interfere with each other. | November 20, 2009 | Download PDF |
| Erroneous 'GWX SERVICE' Message may be displayed | November 6, 2009 | Download PDF |
| The SVT Pathways function may be affected by an approach downgrade from a GPS/WAAS approach with vertical guidance (LPV, LNAV/VNAV, or LNAV +V) to a GPS/WAAS approach with lateral-only GPS guidance (LNAV). | October 1, 2009 | Download PDF |
| Garmin has discovered an issue whereby the navigation system may provide incorrect CDI guidance and active leg indication on the navigation map while flying a published terminal procedure. | August 27, 2009 | Download PDF |
| If the CDI Synchronization function is enabled, the system may select NAV2 as the navigation source for the CDI when automatically switching from GPS to LOC during a localizer or ILS approach. | July 29, 2009 | Download PDF |
| Changes to navigation frequencies that occur between navigation database cycle distributions may cause a mismatch between the automatically tuned VOR/LOC/ILS frequency and the frequency shown on the approach chart or applicable NOTAM. | July 6, 2009 | Download PDF |
| Using the 'Delete All' menu option to delete all flight plans or all user waypoints may cause Red-X failure indications to appear momentarily in any data field(s), including primary flight data fields, on the PFD(s)/MFD. | July 2, 2009 | Download PDF |
| SBAS Operations in Australia, New Zealand and South Pacific Regions | May 29, 2009 | Download PDF |
| Possible temporary loss of heading/attitude information in Garmin Integrated Flight Deck and G600 Systems following extended power-on stall maneuvers. | May 1, 2009 | Download PDF |
| This Service Advisory is intended to clarify operation of Garmin's GPS navigation systems with regard to certain non-precision approach procedures. | April 29, 2009 | Download PDF |
| Possible AFCS (Automatic Flight Control System) failure in Garmin Integrated Flight Deck Systems using GIA SW v5.80 and v5.81. | March 18, 2009 | Download PDF |
| This Service Advisory is to inform 400W/500W users of the operational changes that will appear after the configuration change described in Installation Bulletin 0903 has been performed. | February 25, 2009 | Download PDF |
| Garmin Integrated Flight Deck systems may display a DME failure indication (Red-X) upon power-up if the Honeywell KN63 DME is not receiving a valid DME signal. | February 23, 2009 | Download PDF |
| A condition has been identified whereby the Pathways feature of Synthetic Vision Technology (SVT) may depict the leg immediately preceding glidepath interception at an altitude higher than is published for an approach. | January 21, 2009 | Download PDF |
| When the display backlighting is set to the maximum level and the GMX 200 is operating in high temperatures there may be a noticeable color shift to some of the colors displayed on the unit. If a change in colors does occur, reducing the backlight intensity will resolve the issue. | December 4, 2008 | Download PDF |
| This service advisory explains the firmware upgrade for Flybuddy GPS systems, Model 2001 GPS systems, and Model 2001 and 2001D systems with the 2020 Remote GPS Sensor. It also explains the procedure for returning affected units to Garmin AT for the firmware upgrade. | October 29, 2008 | Download PDF |
| Garmin has identified an issue with the operation of 400W / 500W Series Units and VNAV guidance: When the operator performs a "direct-to" operation to one of the waypoints in the active flight plan and then sets up a vertical navigation profile (VNAV) to any point in the flight plan, the unit may not generate VNAV guidance or it may generate inaccurate VNAV guidance messages. | October 29, 2008 | Download PDF |
| In GDU 620 version 2.01 software, ILS glideslope information will only be displayed if the GDU 620 has valid GPS position information. On the PFD, glideslope information is displayed immediately to the left of the VSI indicator, as shown below. The display of localizer information is not affected. | October 27, 2008 | Download PDF |
| Garmin has identified an issue that is infrequently encountered when entering or changing a G1000 Transponder Flight Identification (ID) number using the Primary Flight Display (PFD) entry method. | October 23, 2008 | Download PDF |
| It has been reported to Garmin that operators using Garmin GPS/WAAS equipped units have been experiencing GPS/WAAS receiver resets, resulting in a temporary loss of navigation. The problem may occur only during certain satellite conditions and only in latitudes north of 60°N that include WAAS coverage. These occurrences are related to the receiver's interaction with the newly expanded WAAS coverage in Alaska and Northern Canada. | October 3, 2008 | Download PDF |
| Garmin has identified a need to clarify the functionality of the GNS 480 "Fuel Low" Alert. | September 24, 2008 | Download PDF |
| All Garmin Integrated Flight Deck systems with Synthetic Vision Technology (SVT) installed are affected by the potential display of cropped traffic symbols. Garmin Integrated Flight Deck systems with GDU Software v9.00 to v9.02 with SVT installed are affected by the potential for traffic displayed by SVT to be affected by differences in barometric altitude vs. GPS altitude. | September 9, 2008 | Download PDF |
| During an approach to an airport where field elevation is significantly different than the runway elevation, the SVT runway on the PFD will be depicted higher or lower than the actual runway. | September 8, 2008 | Download PDF |
| Users of the Garmin AT legacy Model 819, Model 820 Flybuddy GPS, and TSO-C115b Model 2001/2101 Systems with GPS sensors have been experiencing degraded operation since Sunday, August 17, 2008. | August 29, 2008 | Download PDF |
| Garmin has discovered an issue that may cause the system to select and display an incorrect course indication when activating an instrument approach procedure. | August 19, 2008 | Download PDF |
| LPV and LNAV/VNAV Approaches With Three-Character Airport Identifiers | July 22, 2008 | Download PDF |
| Rev B with Service Letter attached. Garmin has identified an issue concerning the Terrain Database, whereby Forward Looking Terrain Avoidance (FLTA) alerts are not available when flying over the open ocean/sea (specifically any body of water at sea level). The TERRAIN/TERRAIN-SVS feature functions properly in all other locations. | June 24, 2008 | Download PDF |
| Garmin has identified that GMX 200 TERRAIN (Non-TAWS) alerts are not available when flying over the open ocean/sea (specifically any body of water at sea level). The TERRAIN Function operates properly at all other locations. | June 5, 2008 | Download PDF |
| Garmin has identified an issue, whereby the GNS 400/500 COM receiver may become garbled. | June 3, 2008 | Download PDF |
| Rev B with Service Letter attached. Garmin has identified an issue concerning the Terrain Database, whereby TAWS-B Forward Looking Terrain Avoidance (FLTA) alerts are not available when flying over the open ocean/sea (specifically any body of water at sea level). TAWS-B functions properly in all other locations. | June 2, 2008 | Download PDF |
| Garmin has identified an issue where the G1000/G900X/GNS 400W Series/GNS 500W Series units may suspend automatic flight plan leg sequencing. | April 21, 2008 | Download PDF |
| Some G1000 Pilot's Guides suggest that Jeppesen NavData can be loaded onto Garmin supplemental data cards. Due to issues encountered with loading Jeppesen NavData database information onto Garmin 010-00330-41 or 010-00330-42 supplemental data cards, Garmin no longer recommends this procedure. | February 6, 2008 | Download PDF |
| Garmin has identified an issue where a G1000/G900X interfaced to a non-Garmin analog autopilot can incorrectly NAV-couple and/or remain NAV-coupled to a VOR signal that is flagged. This condition is limited to VOR tracking. | January 28, 2008 | Download PDF |
| 430W/530W Series and G1000 WAAS GPS CDI Scaling | December 19, 2007 | Download PDF |
| Revised GDL 90 UAT Data Link Sensor Instructions for Continued Airworthiness | December 12, 2007 | Download PDF |
| Setting the ILS CDI CAPTURE to 'Manual' on the CDI/ALARMS AUX page of the Garmin 400W/500W unit is recommended to disable the automatic switching of the navigation source (as when the ILS CDI CAPTURE setting is 'Auto'). | October 17, 2007 | Download PDF |
| Garmin has identified an internal component that may cause failure of the GRS 77 resulting in the loss of attitude and heading information in G1000-equipped aircraft. This failure condition, should it occur, will be immediately recognizable by the accompanying red "x" that is displayed in the absence of attitude and heading data. | August 16, 2007 | Download PDF |
| Affected aircraft use a Calculated Fuel Range Field that works correctly only when the Distance/Speed Display Unit Field on the AUX - System Setup Page is set to NAUTICAL (NM, KT). | August 15, 2007 | Download PDF |
| Garmin has identified a condition whereby the GWX 68 weather radar provides underestimated storm intensity display data. | April 24, 2007 | Download PDF |
| All G1000 Series units with GDU software Version 2.02 through 7.01. All GNS 400W and 500W Series units with Main Software Version 2.00. Garmin has identified a condition whereby failing to remove an active arrival or departure prior to loading a new arrival or departure can cause erroneous course deviation indications and a loss of some navigation cues on the map display. | February 28, 2007 | Download PDF |
| The G1000 system provides a list of available transitions when loading an instrument procedure to a flight plan. The transition list contains a choice of vectors, published transitions, and initial approach fixes (IAF). In rare cases, the list contains two IAFs with the same identifier. | January 9, 2007 | Download PDF |
| Garmin would like to remind pilots flying with GDL 69/69A equipped aircraft that TFRs are advisory in nature only and are not a replacement for a thorough preflight briefing on TFR times and locations. | August 9, 2006 | Download PDF |
| Garmin 500 Series TAWS inhibit mode functionality | August 2, 2006 | Download PDF |
| GDL 69/69A XM Satellite Datalink Storm Cell Tracking Limitation | June 14, 2006 | Download PDF |
| Applicability of Service Bulletin 0530 and 0532 appropriate to TERRAIN functionality of Garmin 400 and 500 series units | May 9, 2006 | Download PDF |
| GDC 74A Pitot Static Test | March 21, 2006 | Download PDF |
| Data required to completely define the affected ILS approaches has been incorporated into the Jeppesen Navigation Database. As such, this alert does not apply when using Jeppesen Data cycle 0506 or later. | November 7, 2005 | Download PDF |
| GDL 69(A) XM Audio/Data Subscription Service Refresh | October 27, 2005 | Download PDF |
| GMA 1347 Loss of COM and/or NAV audio | October 7, 2005 | Download PDF |
| GNS 480 (CNX80) LPV Approach Limit | September 26, 2005 | Download PDF |
| In certain limited circumstances, conflicting navigation information can be provided when a selected Direct-to waypoint is also a waypoint in a loaded terminal/approach procedure. | July 26, 2005 | Download PDF |
| Garmin has identified a condition in Version 2.01 of the G1000 Series Terrain Database that can result in incorrectly depicted topography in parts of Canada and Mexico. | June 10, 2005 | Download PDF |
| G1000 LRU Software Upload Recommendations | June 9, 2005 | Download PDF |
| Garmin has identified a condition in Version 2.01 of the Terrain Database that can result in nuisance terrain alerts in parts of Canada and Mexico in the 500 Series TAWS products. | June 6, 2005 | Download PDF |
| MX20 and i-Linc Multi-Function Display (MFD) unit drawing of obstructions | January 26, 2005 | Download PDF |
| MX20 and i-Linc Multi-Function Display (MFD) Units Equipped with Chartview | January 1, 2005 | Download PDF |
| Owners and operaters of aircraft equipped with G1000 systems should not use the OBS mode until GDU 1040 software version 4.01 or higher is installed. | December 13, 2004 | Download PDF |
| G1000-equipped aircraft with GIA 63 units, serial numbers 46901800 through 46902817, are limited to "VFR DAY ONLY" until an inspection is performed. | September 13, 2004 | Download PDF |
| Mandatory service bulletin requires aftermarket customers and OEMs to install v3.06 for GTX 330, 330D, 33 and 33D Mode S transponders to address a potential air-to-air safety issue. | August 27, 2004 | Download PDF |
| Loss of integrity in fringe WAAS coverage areas in CNX80 SW Version 1.X | June 24, 2004 | Download PDF |
| GPSMAP 295 Safe Battery Installation | March 28, 2000 | Download PDF |
| Correction of serial numbers affected GNC 250/300 Remote Battery Pack Pin-out | January 6, 1998 | Download PDF |