Airworthiness Directives; Superior Air Parts, Inc. Pistons Installed on Teledyne Continental Motors O-470 Series Reciprocating Engines

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This amendment adopts a new airworthiness directive (AD), applicable to certain Superior Air Parts, Inc. Parts Manufacturer Approval (PMA) pistons installed on Teledyne Continental Motors O-470 series reciprocating engines, that requires removal from service of certain pistons. This amendment is prompted by piston failures. The actions specified by this AD are intended to prevent piston failure, which can result in engine power loss, engine failure and loss of the aircraft.