The FAA has issued another AD on Textron Lycoming AEIO-540, IO-540, LTIO-540, O-540 and TIO-540 series reciprocating engines with crankshaft gear retaining bolts, P/N STD-2209 installed. The AD ...
Lycoming officials believe they have identified the forging problem that led to crankshaft failures in its LTIO-540 and TIO engines and have developed process changes and more rigorous monitoring ...
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