SYSTEM & METHOD TO DEPICT GEODETIC REFERENCE DATUM NON-COMPLIANCE REGIONS, AIRPORTS, AND FLIGHT PLANNING ELEMENTS ON AVIONICS BASED DISPLAYS

The invention provides a system and a method to depict geodetic reference datum non-compliance regions, airports and flight planning elements on avionics based displays. Systems and methods are provided for displaying portions of a route on a coverage map that are non-compliant for a Global Navigation Satellite System (GNSS) navigation system in an aircraft. A route compliance module defines a geodetic reference datum standard based on the GNSS navigation system. A navigation system database has compliance information corresponding to each of a plurality of airports. A flight management systemdetermines the route of the aircraft and a visual display displays the route and the coverage map. The route compliance module identifies a non-compliant region of the coverage map that is not compliant with the geodetic reference datum standard based on the compliance information and adjusts the visual display to differentiate a non-compliant portion of the route extending within the non-compliant region of the coverage