Patent ID: 9097529
Filing Date: 2015-08-04
Classification: G01C

Abstract:
1. A method allowing an aircraft to navigate by required navigation performance, the aircraft including a flight management system, a processor, and a display, the method comprising: storing a plurality of flight paths and a first cyclic redundancy check for each of the flight paths in the flight management system; identifying one of the flight paths as a desired flight path in the flight management system; computing a second cyclic redundancy check by the processor for the desired flight path; comparing by the processor the first cyclic redundancy check of the identified flight path with the second cyclic redundancy check; providing a first alert signal by the processor to the display when the comparison of the first cyclic redundancy check of the identified flight path with the second cyclic redundancy check exceeds a first threshold; determining a sensor position of the aircraft by an external sensor of the aircraft; comparing within the processor the sensor position with the high integrity flight path; and providing by the processor a second alert signal and the high integrity flight path to the display when the comparison of the sensor position with the high integrity flight path exceeds a second threshold; displaying a first alert when the first alert signal is provided; and displaying a second alert when the second alert signal is provided.