The FAA has issued Airworthiness Directive (AD) 2023-17-04 (superseding AD 2022-04-04) which requires replacing the oil filter adapter gasket on certain Continental Aerospace Technologies Inc. engines.

 

NAAA reported on this in September 2022 and June 2023 when the FAA initially proposed applicability changes to AD 2022-04-04, expanded replacement gasket part numbers and later updated the applicability once again.

 

This AD affects certain Continental Model C–125, C145, IO–360, IO–470, IO–550, O–300, O–470, TSIO–360, and TSIO–520 series engines and certain Continental Motors IO–520 series engines with a certain oil filter adapter installed. On affected engines, this AD requires replacement of the oil filter adapter fiber gasket with a copper or stainless-steel PTFE gasket. 

 

This AD is effective October 23, 2023 – View the AD to check applicability details.