Method for in situ diagnosis of an onboard avionics...

Details Method for in situ diagnosis of an onboard avionics... Method for in situ diagnosis of an onboard avionics...

G - Physics

01

D

G01D 18/00 (2006.01) G01D 21/00 (2006.01)

Patent

CA 2701742

The invention relates to a method for diagnosing an onboard instrument of an aircraft piloted by a pilot and optionally a co-pilot, the onboard instrument receiving secondary signals from at least one sensor. According to the invention, the diagnosis method comprises the following steps: initiating (41) a recording of the secondary signals upon an instruction by the pilot or co-pilot when he detects a failure of the onboard instrument; recovering (42) the recorded signals without removing the onboard instrument; determining (43) from the recovered signals the presence or absence of a failure of the onboard instrument and, in the case of failure, diagnosing the failure of the onboard instrument. The invention can particularly be used for reducing the repair time and for identifying the core reason of the failure without removing the backup instrument.

La présente invention concerne un procédé de diagnostic d'un instrument de bord d'un aéronef piloté par un pilote et éventuellement un copilote, l'instrument de bord recevant des signaux secondaires d'au moins un capteur. Selon l'invention, le procédé de diagnostic comprend les étapes suivantes : déclencher (41 ) un enregistrement des signaux secondaires sur commande du pilote ou du copilote lorsqu'il constate une défaillance de l'instrument de bord; récupérer (42) les signaux enregistrés sans déposer l'instrument de bord; déterminer (43), à partir des signaux récupérés, la présence ou non d'une défaillance de l'instrument de bord et, le cas échéant, diagnostiquer la défaillance de l'instrument de bord. L'invention s'applique notamment pour réduire les durées de dépannages et remonter à la cause source de la défaillance sans déposer l'instrument de secours.

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