The Carroll–Hung method for component reliability mapping in aircraft maintenance

摘要: Mean time between unscheduled removal (MTBUR) measurement is a baseline technique for condition monitoring (CM) in aircraft reliability programmes. Many airlines, component suppliers and airframe manufacturers apply MTBUR analysis because of its simplicity industry-wide acceptance contractual, performance technical evaluation purposes. Owing to aggregated nature, alone has little offer showing the significant changes within repairable population. This paper introduces Carroll–Hung (CH) method, an innovative approach bridging industrial practice CM alerts process identifying candidates improvement. Through systematic mapping modulated time-to-failure patterns onto finger-print charts, trained engineers are able scrutinize life characteristics then detect inherent issues by making reference CH pattern guidebook. Applications at two airlines have proved method be simple effective algorithm unique failure examination involve system knowledge logistics factors developing improvement plans. Possible refinement methodology using non-parametric recognition planned future research. Copyright © 2007 John Wiley & Sons, Ltd.