A computer implemented method, apparatus, and computer usable program product for cross checking required navigation performance procedures. A required navigation performance procedure in a flight management system is executed in an aircraft. A global positioning system signal in an electronic flight bag or other independent data processing system located onboard the aircraft is received while executing the required navigation performance procedure. A current position of the aircraft based on the global positioning system signal is presented on a moving map. A set of containment lines on the moving map are displayed to indicate whether deviations from the required navigation performance procedure have occurred.