76-09-10 Safety brace to prevent possible jamming of the aileron control system and consequent loss of roll control

76-11-03 Seat Reinforcement to prevent possible tow release lever jamming and consequent crashing of the glider during a winch launch

83-16-02 Procedure to prevent fatigue fracture of the air brake drive lever ball joints

97-08-06 Safety pins for L'Hotellier ball and swivel joint quick connectors

99-03-01 Safety device for the tailplane locking hook