Reliability of gas turbine engines

Date:         05 Jan 98 23:43:08 
From:         cquaranta@aol.com (CQuaranta)
Organization: AOL http://www.aol.com
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I was reading the NTSB aircraft incident/accident reports and came across a
number of instances of "uncontained engine failure" - supposedly either a
turbine, compressor or fan blade seperates and punctures the engine housing.

    What is the approximate rate of these events in terms of events/hours of
operation?

                                                                      Chris