Airworthiness Directives; Dornier Model 328-100 and -300 Series Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Dornier Model 328-100 and -300 series airplanes. This action requires repetitive inspections to detect cracking of the trailing edge of the rudder spring tab, and follow-on actions, if necessary. For certain airplanes, this action provides for optional terminating action for the repetitive inspections. 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 cracking of the rudder spring tab, which could result in reduced flutter margin and consequent loss of control of the airplane.