Engine Pistons

The following information is derived from the FAA's Service Difficulty Reports and Aviation Maintenance Alerts

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Beech C33 Debonair Broken Rings And Skirts The oil quick-drain valve would not lock open. Inspection revealed metal in the sump. The oil filter was removed and cut open; no visible contamination was noted. An oil sample and compression tests came back normal. Teardown revealed three piston skirts were broken, and piston ring pieces were […]
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