FAA Revises Continental Engine AD

The FAA announced Monday it has found an error in an airworthiness directive (AD) for Continental GTSIO-520 series engines targeting the starter adapter assembly and/or crankshaft gear on about 4,200 engines. As a result, the FAA is superseding that AD with a new proposed AD and expects that 25 percent of the affected engines will require an unscheduled “rough-running engine” inspection and “about half of the engines will require the bushing and TCM service kit.”

The FAA announced Monday it has found an error in an airworthiness directive (AD) for Continental GTSIO-520 series engines targeting the starter adapter assembly and/or crankshaft gear on about 4,200 engines. As a result, the FAA is superseding that AD with a new proposed AD and expects that 25 percent of the affected engines will require an unscheduled "rough-running engine" inspection and "about half of the engines will require the bushing and TCM service kit." [more] The cost associated with that service runs roughly $800, according to the FAA. Owners should also be prepared for possible multiple inspections and component replacements.