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Central maintenance computer system and fault data handling method

  • US 4,943,919 A
  • Filed: 10/17/1988
  • Issued: 07/24/1990
  • Est. Priority Date: 10/17/1988
  • Status: Expired due to Term
First Claim
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1. An onboard central maintenance computer system for an aircraft system, the aircraft system including:

  • (a) a plurality of LRUs;

    (b) communication means through which the LRUs can transmit LRU fault data and receive test initiation commands; and

    (c) an operator interface device including (i) presentation means for presenting maintenance information generated by the central maintenance computer system, (ii) input means for receiving input commands, and (iii) interface communication means for transmitting the input commands and receiving the maintenance information, the central maintenance computer system comprising;

    (a) data transfer means for transferring data within said central maintenance computer system;

    (b) input/output means coupled to the data transfer means, and coupled to the communication means and to the interface communication means for receiving and transmitting data therebetween;

    (c) memory means coupled to said data transfer means for storing data including a plurality of preestablished maintenance messages; and

    ,(d) control processing means coupled to said data transfer means for controlling the transfer and processing of data within said central maintenance computer system and for controlling the operations of said input/output means and said memory means, said control processing means including;

    a collection module for causing said input/output means to collect the LRU fault data via the communication means; and

    a consolidation module for generating an active maintenance message from the LRU fault data by screening out cascaded faults and consolidating multiple faults to produce an isolated fault, associating said isolated fault with one of said maintenance messages, termed active maintenance message, in said memory means, and causing said active maintenance message to be identified in said memory means.

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