Airworthiness Directives; DG Flugzeugbau GmbH Models DG-500 Elan Series, DG-500M, and DG-500MB Sailplanes

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This document proposes to adopt a new airworthiness directive (AD) that would apply to certain DG Flugzeugbau (DG Flugzeugbau) GmbH Models DG-500 Elan Series, DG-500M, and DG-500MB sailplanes. The proposed AD would require you to visually inspect the elevator control system for proper movement, obtain and incorporate a repair scheme if improper movement is found, and modify and install resin thickened cottonflock reinforcements to the elevator control system as a way to increase the stiffness of the elevator control support stand. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the Federal Republic of Germany. The actions specified by the proposed AD are intended to detect and correct improper movement in the elevator control system and to increase the stiffness of the elevator control support stand. Without accomplishing these actions, the pilot's capability to use full elevator control deflection could be limited, which could require increased force in moving the elevator control with a consequent potentially uncontrolled flight condition.