Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Grob Luft Und Raumfahrt (Grob) Models G102 Astir CS, Club Astir IIb, Twin Astir, Speed Astir, Standard Astir II, and Speed Astir IIb sailplanes. The proposed action would require inspecting all elevator and rudder hinges for damage (delamination, cracks, corrosion, or buckling), and repairing any damaged parts. Several occurrences of inner elevator hinges separating during flight prompted the proposed action. The actions specified by the proposed AD are intended to prevent these hinges from separating, which could result in loss of control of the sailplane.