8Getting StartedData Flag DescriptionTerrain coverage is not available for some part of theterrain advisory coverage area. Terrain advisories maynot be provided.When connected to the SL30, indicates the SL30 is not avail-able or valid. ILS, OBS, and VORs will not be highlighted.No valid traffic information is being received from theoptional Ryan TCAD sensor. Traffic information willnot be displayed.Indicates that radar status information is not availablefrom the optional external radar transmitter head.Radar related functionality may not be available.(Green) Indicates that the radar is ON and transmitting RFenergy. Appropriate precautions should be taken.(Green Flashing) Indicates that the radar is in Hold and is transmittingRF energy. Appropriate precautions should be taken.(Green) Displayed when the GDL 90 is in Ident mode.No valid datalink information is available from theoptional external source.No valid terrain information is available from theoptional external source.No valid datalink information is available from theoptional external source.No valid TIS-A information is available from theoptional external source.Data Flags