Airworthiness Directives; Fokker Model F-27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes

概要

This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F-27 series airplanes, that requires the implementation of a corrosion prevention and control program either by accomplishing specific tasks or by revising the maintenance inspection program to include such a program. This amendment is prompted by reports of incidents involving corrosion and fatigue cracking in transport category airplanes that are approaching or have exceeded their economic design goal; these incidents have jeopardized the airworthiness of the affected airplanes. The actions specified by this AD are intended to prevent degradation of the structural capabilities of the airplane due to the problems associated with corrosion.