Garmin GTN 650 Pilot's Guide - Page 314

Foreword Getting Started Xpdr Ctrl Com/Nav FPL Direct-To Proc Wpt Info Map Traffic Terrain Weather Nearest Music Utilities System Messages Symbols Appendix Message GAD 42 GAD 42 needs service. GLIDESLOPE Glideslope receiver needs service. GLIDESLOPE Glideslope receiver has failed. GPS NAVIGATION LOST Insufficient satellites. Use other navigation source. GPS NAVIGATION LOST Erroneous position. Use other navigation source. GPS RECEIVER GPS receiver has failed. Check GPS coax for electrical short. Description GAD 42 indicates it needs service. The GAD 42 may continue to function. The glideslope board is indicating that it needs service. The glideslope board may continue to function. The glideslope board is not communicating property with the system. GPS position has been lost due to lack of satellites. GPS position has been lost due to erroneous position. Internal communication to the SBAS board is inoperative. Action Verify all input/output data from/ to the GAD 42 Interface Adapter. Contact dealer for service. Verify glideslope deviation indications with another source and crosscheck final approach fix crossing altitude. If another glideslope source is not available for verification, fly a GPS based approach. Contact dealer for service. Fly an approach that does not use the glideslope receiver (VOR, LOC, GPS). Contact dealer for service. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Index 16-8 Garmin GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. B