Common S~2ENCE Maintenance

摘要

Intermediate level avionics maintenance requires diagnostic assessment, repair, and flight certification steps. The current Automated Test Systems (ATS) are primarily designed to verify equipment end-to-end function (flight certification), so they are not optimized to support diagnostic procedures. An operator typically performs problem diagnosis at the beginning of the end-to-end test without any automated access to existing evidence of the likely failure. Test Program Set (TPS) routines can take hours for a functioning unit and much longer if repairs are necessary. The Common S~2ENCE (Smart Support Enhancements for Net Centric Enabled) Maintenance System provides data exchange and diagnostic reasoning services to enable reduced test and diagnosis times. The system acquires operational flight and maintenance data from a variety of sources using open data standards and performs model-based diagnostic reasoning to identify likely failure modes and determine optimal test entry points. These enhancements greatly reduce test times by directing the test to the area of most likely failure. The system also provides diagnostic assistance based on bench testing results as the specific unit under test (UUT) is evaluated. The system architecture and case studies of the systems as it has been applied to the F/A-18 I-Level avionics maintenance environment are described in this paper. Data acquisition, transfer, and analysis methods are also presented. A discussion of the application architecture details supportability considerations and extensibility to other operating environments.