The FAA has announced an airworthiness directive (AD) AD-2022-01586-E for Continental engine models GTSIO-520, IO-470, IO-520, IO-550, IOF-550, LIO-470, LIO-520,LTSIO-520, O-470, TSIO-470, TSIO-520, TSIO-550, TSIOF-550, and TSIOL-550 with a certain Superior Air Parts, Inc. cylinder assembly or intake valve installed.  

The affected cylinder assemblies and intake valves are installed as a replacement part under parts manufacturer approval (PMA) on certain affected Continental engines. This AD was prompted by three intake valve failures on reciprocating engines that resulted in engine damage and emergency landing or aborted takeoff. This AD requires replacement of the affected engine intake valve.  

For more information, download the PDF of the AD here.