Page 1-18 GTN 625/635/650 TSO Installation ManualRev. C 190-01004-021.6 GTN DatabasesThe GTN utilizes various databases. With the exception of the Navigation, Basemap, SafeTaxi, andObstacle databases which reside internal to the GTN, all databases are stored in a single SD memory cardthat is inserted into the vertical slot on the left side of the GTN. The following describes each databaseand how the databases are updated.Garmin requests that the flight crew report any observed discrepancies related to database information.These discrepancies could come in the form of an incorrect procedure; incorrectly identified terrain,obstacles and fixes; or any other displayed item used for navigation or communication in the air or on theground. Go to FlyGarmin.com and select ―Aviation Data Error Report.‖CAUTIONDatabases on the Supplemental Data Card are locked to specific GTN installations. Thefirst time the Supplemental Data Card is inserted into a GTN it becomes ―locked‖ to thatparticular GTN and will not work in other installations.1.6.1 Basemap DatabaseThe basemap provides ground-based references such as roads and bodies of water. The database is storedin the GTN internal memory. The basemap does not have a scheduled update cycle and as such does nothave an expiration date. The basemap database is updated very infrequently. Should this database need tobe updated in the future, Garmin will provide details on how to load the updated data into the GTN.1.6.2 Navigation DatabaseThe Jeppesen Navigation Database provides the GTN with the required information for displaying flightplan information.The GTN utilizes a database stored on an SD memory data card for easy updating and replacement. Thenavigation database may be updated by inserting an updated navigation database update card into thevertical SD card slot on the left side of the GTN. The actual database is downloaded into the unit, so thecard can be removed after the update. Each card will only update one system. Alternately, the navigationdatabase may be updated by copying the database to the Garmin-supplied Supplemental Data card. It willbe downloaded into the GTN on first use, and the file can be left on the Supplemental Data card until thenext update cycle.The navigation database on the GTN database card is generated from current Jeppesen Sanderson dataand converted to a format that is used by the GTN. The data conversion process is performed usingsoftware that is developed and maintained under Garmin configuration management according toRTCA/DO-200A, Standards for Processing Aeronautical Data. GTN users update their database card bypurchasing database subscription updates from Garmin. The database card is programmed using an SDcard reader. Contact Garmin at 800-800-1020 or go to FlyGarmin.com for more information andinstructions.1.6.3 FliteCharts® Database (GTN 725/750 Only)FliteCharts resemble the paper version of AeroNav Services (formerly named National AeronauticalCharting Office) terminal procedures charts. The charts are displayed with high-resolution and in colorfor applicable charts. FliteCharts database subscription is available from Garmin. When viewing thesecharts on the GTN, the aircraft position is not depicted on the chart. The FliteCharts database is updatedby removing the database card from the GTN, updating the database on the card and reinserting the card.Each card can only be used with one system. GTN users update their database card by purchasingdatabase subscription updates from Garmin. The database card is programmed using an SD card reader.Contact Garmin at 800-800-1020 or go to FlyGarmin.com for more information and instructions.
