AD 2023-17-04Published 2023-09-21Effective 2023-10-26
Supersedes 2022-04-04
Continental Aerospace Technologies, Inc. Engines
Requires replacing the fiber gasket with a copper gasket or a stainless steel embedded within polytetrafluoroethylene gasket (stainless steel PTFE gasket).
1 AD superseded by this one retired · earliest 2022-02-22
AD 2022-04-04Published 2022-02-22Effective 2022-03-29
Continental Aerospace Technologies, Inc. and Continental Motors Reciprocating Engines
Requires replacing the oil filter adapter fiber gasket (fiber gasket) with an oil filter adapter copper gasket (copper gasket).
Full official abstract
Airworthiness Directives; Continental Aerospace Technologies, Inc. and Continental Motors Reciprocating Engines
The FAA is adopting a new airworthiness directive (AD) for certain Continental Aerospace Technologies, Inc. C-125, C145, IO-360, IO-470, IO-550, O-300, O-470, TSIO-360, TSIO-520 series model reciprocating engines and certain Continental Motors IO-520 series model reciprocating engines with a certain oil filter adapter installed. This AD was prompted by reports of two accidents that were the result of power loss due to oil starvation. This AD requires replacing the oil filter adapter fiber gasket (fiber gasket) with an oil filter adapter copper gasket (copper gasket). The FAA is issuing this AD to address the unsafe condition on these products.
Source: Federal Register document 2022-03640, retrieved 2026-08-15 · checked against the live Federal Register record on 2026-10-01
Full official abstract
Airworthiness Directives; Continental Aerospace Technologies, Inc. Engines
The FAA is superseding Airworthiness Directive (AD) 2022-04-04 for certain Continental Aerospace Technologies, Inc. (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. AD 2022-04-04 required replacing the oil filter adapter fiber gasket (fiber gasket) with an oil filter adapter copper gasket (copper gasket). This AD was prompted by reports of two accidents that were the result of power loss due to oil starvation. This AD requires replacing the fiber gasket with a copper gasket or a stainless steel embedded within polytetrafluoroethylene gasket (stainless steel PTFE gasket). This AD also revises the applicability to include Continental model engines equipped with an F&M Enterprises, Inc. (F&M) or a Stratus Tool Technologies, LLC (Stratus) oil filter adapter installed. The FAA is issuing this AD to address the unsafe condition on these products.
Source: Federal Register document 2023-20445, retrieved 2026-08-15 · checked against the live Federal Register record on 2026-10-01
