Garmin GNC 420AW Pilot's Manual

Also see for GDL 69: Pilot's guide addendum Pilot's guide addendum Activation Instructions Activation Instructions Pilot's guide addendum

Contents

Garmin GNC 420AW Pilot's Manual Manual pdf 59 page image

53Part Four: Section 3HTAWS AlertsTerrain Database InformationTo function properly HTAWS requires the use ofdatabases specific to helicopters and HTAWS. The databasesrequired are:1) 6 arc-second Terrain Database2) Helicopter Obstacle Database3) Helicopter Aviation Database including HeliportsDatabase 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 numbers todetermine if a newer version is available.The database update process includes either repro-gramming or replacing the database card and insertingthe updated card in the right card slot on the unit frontpanel. The terrain/obstacle database may be down-loaded via the internet and the card reprogrammedusing a USB programmer available from Garmin. Con-tact Garmin at 800-800-1020 or atwww.garmin.com for more information.To update your terrain/obstacle databases:1. Acquire a new terrain data card from Garmin.2. Turn off the power to the unit.3. Remove the old terrain data card and insert thenew card into the right-most slot of the unit.4. Turn on the unit and verify that the HTAWSsystem passes self-test.Terrain Database Areas of CoverageThe following describes the area of coverage avail-able in each database. Regional definitions may changewithout notice.Database Coverage AreaWorldwide (WW)Cycle 09T1, and later:Latitudes: N90° to S90°Longitudes: W180° to E180°Americas - North Latitudes: 0° to N90°Longitudes: W180° to W30°Americas - South Latitudes: N30° to S90°Longitudes: W180° to W30°Atlantic - North Latitudes: 0° to N90°Longitudes: W30° to E90°Atlantic - South Latitudes: N30° to S90°Longitudes: W30° to E90°Pacific - North Latitudes: 0° to N90°Longitudes: E60° to E180°Pacific - South Latitudes: N30° to S90°Longitudes: E60° to E180°190-00356-30 Rev H