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Method and computer program for the maintenance aid of aircraft equipment

  • US 9,767,413 B2
  • Filed: 07/25/2014
  • Issued: 09/19/2017
  • Est. Priority Date: 07/31/2013
  • Status: Active Grant
First Claim
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1. A decision aid method for maintenance operation of aircraft equipment, the aircraft comprising a maintenance system arranged to make a record of one or more equipment failure messages and equipment failure warning messages emitted during a flight, the method comprising:

  • extracting, by at least one processor, at least one combination of failure messages corresponding to failure messages recorded by the maintenance system during a flight and a set of previous flights; and

    determining, by the at least one processor, as a function of the at least one extracted combination, a probability of occurrence of at least one warning message, wherein;

    warning messages are represented as nodes of a directed graph stored in computer memory comprising a set of arcs each provided with a transition probability from one warning message to another, each warning message of the directed graph corresponding to a given sequence of failure messages;

    the at least one extracted combination corresponds to the sequence formed by the failure messages recorded during the flight and the set of previous flights;

    the extracted sequence is represented as a mix of warning messages; and

    the determining a probability of occurrence comprises calculating, by the at least one processor, a probability of occurrence of each of the warning messages of the graph made by a random walk on the graph initialized by the representation of the extracted sequence.

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