2 - NAV PAGES45190-00356-00 Rev BTerrain OperationGeneral Database InformationThe Garmin TERRAIN system uses terrain andobstacle information supplied by government sources.The data undergoes verification by Garmin to confirmaccuracy of the content, per TSO-C151b. However, theinformation displayed should never be understood tobe all-inclusive. Pilots must familiarize themselveswith the appropriate charts for safe flight.NOTE: The data contained in the terrain andobstacle databases comes from governmentagencies. Garmin accurately processes and cross-validates the data, but cannot guarantee theaccuracy and completeness of the data.The terrain/obstacle databases are contained on adatacard which is inserted in the right-most slot of the400W Series units.Database VersionsThe version and area of coverage of each ter-rain/obstacle database is shown on the Terrain Data-base Versions Page, located in the AUX Page Group.Databases are checked for integrity at power-up. If adatabase is missing or corrupt, the TERRAIN systemwill fail the self-test and issue a failure message.TERRAIN Database InformationDatabase UpdatesTerrain/Obstacle databases are updated periodi-cally with the latest terrain and obstacle data. Visit theGarmin website to check for newer versions of terrain/obstacle databases. Compare database cycle numbersto determine if a newer version is available.The database update process includes eitherreprogramming or replacing the database card andinserting the updated card in the right card slot on theunit front panel. The terrain/obstacle database maybe downloaded via the intenet and the card repro-grammed using a USB programmer available fromGarmin. Contact Garmin at 800-800-1020 or at www.garmin.com for more information.
