Patent ID: 9139289
Filing Date: 2015-09-22
Classification: B64C,G05B,G05D

Abstract:
1. A method for automatic monitoring of a flight management assembly of an aircraft implementing air operations necessitating guaranteed navigation and guidance performance, the flight management assembly comprising a first flight management system and a second flight management system, which are independent, and which, in use, allow pilots of the aircraft to manage a flight plan of the aircraft and generate deviations and guidance commands, the flight management assembly comprising a third flight management system, the third flight management system comprising a back-up system deprived of an ability to dialogue with the pilots, such that the third flight management system is prevented from accessing the flight plan, wherein: a) flight path data generated by the first and second flight management systems respectively, are compared in order to check their consistency; b) the first and second flight management systems transmit their flight path data to the third flight management system; c) the third flight management system receives a current position of the aircraft, calculates deviations between this current position of the aircraft and a flight path depending on the flight path data received from the first and second flight management systems, which it takes into account only if they are identical, and calculates, according to these deviations, guidance commands for slaving onto this flight path; and d) a monitoring system comprising monitoring architecture and associated monitoring algorithms compares the deviations and guidance commands received from the first second and third flight management systems in order to detect an inconsistency between them, the monitoring system being configured to identify which system is responsible for the inconsistency so that its data is no longer taken into account where the inconsistency is detected.