LYCOMING (L)O-360, (L)IO-360, AEIO-360, O-540, IO-540, AEIO-540, (L)TIO-540, IO-580, and IO-720 series reciprocating engines [Docket No. FAA-2006-24785; Directorate Identifier 2006-NE-20-AD; Amendment 39-17196; AD 2012-19-01] – supersedes an AD that currently requires replacing certain crankshafts in the affected engines. This AD continues to require replacing certain crankshafts, corrects the start date of affected engine models in Lycoming Mandatory Service Bulletin (MSB) No. 569A to the ...


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