This study of JT9D, CF6, and PT6 aircraft engine reliability represents a follow-on effort to the JT8D engine study which was published in the Federal Aviation Administration (FAA) Technical Center Final Report DOT/FAA/CT-91/10. As with the JT8D engine study, this study trended in-flight shutdowns and unscheduled removal rates of JT9D, CF6, and PT6 turbine aircraft engines for a thirty-six-month period covering February 1988 through January 1991. As in the previous report the methodology was to review which air carriers consistently exceeded the standard deviation norm for in-flight shutdowns and unscheduled engine removals on a monthly basis and then examine the engine component failures reported by those carriers. Engine component failures were grouped as follows: bearings, airfoils, cases, controls and accessories, fuel/oil systems, and others (not trended). For this study of the JT9D, CF6, and PT6 engines, controls and accessories typically produced the largest number of in-flight flameouts, compressor stalls, and engine shutdowns. In addition to the actuarial analysis and component failure mode trending performed on the JT9D, CF6, and PT6 engines, application of an inspection procedure developed for the JT8D engine was made on the JT9D and CF6 engine cases. Actuarial analysis, Engine case, In-flight shutdowns, Data base, Unscheduled engine, Ultrasonic, Removals, Inspection. Service Difficulty Report (SDR).


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    An automated ultrasonic system for inspection of aircraft turbine engine

    Stubbs, D. / Fiscus, I. / Gasper, D. et al. | Tema Archive | 2004


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