Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to Glasflugel, model Mosquito sailplanes. The proposed action would require modifying the mounting studs on the lifting/tilting frame of the canopy system, repetitively inspecting the mounting stud, and incorporating flight manual revisions that specify a warning on emergency canopy deployment failure. Canopy system problems discovered during routine checks and periodic inspections of these sailplanes prompted the proposed action. The actions specified in this proposed AD are intended to prevent canopy system failure, which could result in loss of control of the sailplane.