Garmin GTN 750 Pilot's Guide - Page 369
Approach, Downgrade, Apr Guidance, Available, Cdi Source, Cdi/hsi Flag, Com Radio
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Message APPROACH DOWNGRADE Approach downgraded. Use LNAV minima. APR GUIDANCE AVAILABLE Press "Enable APR Output" before selecting APR on autopilot. CDI SOURCE Select appropriate CDI source for approach. CDI/HSI FLAG Main lateral/ vertical flag on CDI/HSI is inoperative. COM RADIO Com radio needs service. Description Action Approach has been Continue to fly the approach using downgraded from published LNAV minimums. LPV or LNAV/VNAV, to an LNAV approach. Vertical guidance will be removed from the external CDI/HSI display. The GTN is configured Press the "Enable APR Output" for KAP140/KFC225 button on the GTN, this will cause autopilot, and approach the autopilot to go into ROL guidance is now mode. Engage the autopilot into available. approach mode. See section 6.14 for additional information. Aircraft is on a GPS approach but CDI is set to VLOC, or aircraft is on VLOC approach and CDI is set to GPS and aircraft is less than 2 nm from the FAF. The Main Lateral Superflag or Main Vertical Superflag output has been turned off due to an overcurrent condition. The com radio is reporting that it needs service. The com radio may continue to function. Select the appropriate CDI source for approach. Verify course guidance is valid and correct by crosschecking with the GTN on-screen CDI and other navigational equipment. Contact dealer for service. Contact dealer for service. 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 17-3 Index