Airworthiness Directives; Dornier Model 328-100 Series Airplanes

This amendment supersedes an existing airworthiness directive (AD), applicable to all Dornier Model 328-100 series airplanes, that currently requires repetitive tightening of the screws and quick- release fasteners on the wing/body fairing panels. This action will continue to require the repetitive tightening of these parts on certain airplanes. This amendment requires the installation of new fastener systems for those panels on certain airplanes and the application of new torque values. Accomplishment of these actions will terminate the requirement for repetitive tightening of the screws and fasteners of those airplanes. In addition, the AD will limit the applicability of the existing AD by removing certain airplanes. This amendment is prompted by the manufacturer's development of new fastener systems that will not vibrate and loosen. The actions specified by this AD are intended to prevent separation of loosened wing/body fairing panels from the airplane, which, if not corrected, could lead to structural damage to the horizontal or vertical stabilizer, and potential injury to persons on the ground.