Avionics Design for Maintainability -- Are We Gaining Or Losing?

Document Number: 730882

Date Published: February 1973

Author(s):
T. A. Ellison - United Air Lines

Abstract:
An overview of avionics maintainabilixy, as indicated from airline operating statistics, shows improvement in some elements and degradation in others, but a slowly degrading overall trend. Maintainability elements and trends are identified and discussed.

Principal problems are the shop labor expended for the high proportion of removed equipment found to be in satisfactory condition, and the increasing line maintenance effort required by wide-body aircraft.

Built-in test equipment (BITE) or monitoring within the system, if properly designed, appears to be a good approach to improve this situation. Design guidance for effective BITE or monitoring objectives is provided.

Product Status: In Stock

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