Airworthiness Directives; Fokker Model F28 Mark 0070 and Mark 0100 Series Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to all Fokker Model F28 Mark 0070 and Mark 0100 series airplanes. This action requires revising the Airplane Flight Manual (AFM) to provide the flightcrew with instructions not to arm the liftdumper system prior to commanding the landing gear to extend. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent inadvertent deployment of the liftdumpers during approach for landing, and consequent reduced controllability and performance of the airplane.