Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dornier Model 328-100 series airplanes. This proposal would require a one-time inspection of the double shuttle valve in the upper fuselage fairing for incorrectly labeled part numbers, and corrective actions, if necessary. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to ensure replacement of the double shuttle valves when they have reached their maximum life limit; incorrectly labeled part numbers of the double shuttle valves that are not replaced could result in the failure of the roll control spoilers, and, consequently, lead to reduced controllability of the airplane.