Garmin GTN 750 Pilot's Guide - Page 377

Message Description Action LOCKED FLIGHT The user is trying to PLAN activate a flight plan Cannot activate that contains a locked a flight plan waypoint. containing a locked waypoint. Unlock the flight plan by modifying stored flight plans as necessary to include waypoints, procedures, and airways that are in the current navigation database. LOSS OF The GPS module has INTEGRITY (LOI)- reported a loss of Verify GPS integrity. position with other navigation equipment. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service if this message persists. MAGNETIC VARIATION Aircraft in area with large mag var. Verify all course angles. MagVar is flagged as unreliable in the MagVar database. This normally occurs when operating at high latitudes that do not support a Nav Angle of Magnetic. Verify that the geographical region supports navigation based on magnetic variation. NAV ANGLE NAV Angles are referenced to True North (T). Nav angle is set to True. No action is necessary; message is informational only. NAV ANGLE NAV Angles are referenced to a User set value (U). Nav angle is set to User. No action is necessary; message is informational only. NON-WGS84 The active waypoint is not No action is necessary; message is WAYPOINT - referenced to the WGS84 informational only. See CRG. Location datum. may be different See Note 1 at the end of than where the table. surveyed for [WPT]. Foreword Getting Started Audio & Xpdr Ctrl Com/Nav FPL Direct-To Proc Charts Wpt Info Map Traffic Terrain Weather Nearest Music Utilities System Messages Symbols Appendix 190-01007-03 Rev. B Garmin GTN 725/750 Pilot's Guide 17-11 Index