The expected Continental Aerospace Airworthiness Directive (AD) 2023-04-08 has been published, requiring immediate inspection of certain crankshaft assemblies produced by Continental between June 1, 2021 and February 7, 2023. Among many other engine types, this AD affects most Continental engines installed in ABS-type airplanes including STC'd installations. The AD requires accomplishing the actions described in Continental Mandatory Service Bulletin (MSB) 23-01A before further flight, except the AD requires the inspection regardless of time in service. The AD provides information about obtaining a ferry permit if needed to fly the airplane to a location where the inspection may be performed.
Public comments will be accepted through April 10, 2023 using contact information included in the AD. However, this is a Final Rule and is effective today, February 23, 2023.
See the AD and the MSB attached below.