Airworthiness Directives; Raytheon Model Hawker 1000 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model Hawker 1000 series airplanes, that requires modifying the aft core cowl nozzles of the engine nacelles. This amendment is prompted by a report indicating that the sealant on the core cowl nozzles may extend higher than the forward flange of the core cowl nozzles, which could result in contact between the cowl sealant surface and the lever of the engine mechanical over-speed control system. The actions specified by this AD are intended to prevent such contact, which could cause the over-speed system to function improperly and consequent engine structural failure.