Singapore University Reliability Centered Maintenance Paper

Singapore University Reliability Centered Maintenance Paper

(a) The defect data for several line replaceable units (LRU) of an aircraft cabintemperature control system gathered over a 12-months period
(i) Using the MS Excel application or otherwise, construct the Weibull ProbabilityPlot for each of the LRU in the given aircraft cabin temperature control system.The cumulative distribution function may be estimated using the median rankmethod.
(ii) For each of the Weibull Probability Plots drawn in (a), construct the best-fitstraight line(s) connecting failure data points, and estimate the shape parameterand scale parameter for each best-fit straight line(s).
(iii) For each LRU, analyse the failure patterns exhibited from the plotted graph andevaluate the suitability of implementing Hard-Time (HT), On-Condition (OC)maintenance and Condition Monitoring (CM) maintenance.

(b) Discuss the latest industrial trend in applying the following maintenance concepts oncommercial aircraft systems. Illustrate your discussion with specific, relevant aircraftexamples.(i) On-condition Maintenance(ii) Prognostic Maintenance & Health Monitoring