Systems and methods 600 for navigating an aerial vehicle 100 are provided. One example aspect of the present disclosure is directed to a method 600 for navigating an aircraft. The method includes receiving 602, by one or more processors 704, one or more first geographic coordinates via an interface configured to receive geographic coordinates from a satellite transmission 106. The method includes receiving 604, by the one or more processors 704, one or more second geographic coordinates via an interface configured to receive geographic coordinates from a ground transmission 104. The method includes determining 606, by the one or more processors 704, that the one or more first geographic coordinates and the one or more second geographic coordinates are inconsistent. The method includes updating 608, by the one or more processors 704, a flight plan using the one or more second geographic coordinates when the one or more first geographic coordinates are inconsistent with the one or more second geographic coordinates.