pdf GFA AD 675 Cancelled 2018.09.14 Popular

FLIGHT CONTROLS – CONTROL STICK – INSPECTION / REPLACEMENT   

CANCELLED Refer EASA AD 2016-0121 

During an aerobatic training flight on a single MDM-1 FOX sailplane, the tube of the control stick at the front seat broke. As the sailplane could still be controlled from the rear seat, a safe landing was made. The initial investigation showed that the affected stick may have been damaged, due to a large overload on the stick during a flight some years before. This condition, if not detected and corrected, could lead to reduced control, or even a loss of control, of the sailplane and consequent injury to the occupant.To address this unsafe condition, Zakłady Lotnicze Margański & Mysłowski developed and published Service Bulletin (SB) No BO-17/2011 MDM-1 FOX, which provides instructions for an inspection of the front seat control stick tube geometry and external surface condition. For the reasons described above, this AD requires accomplishment of a one­time inspection of the front seat control stick to detect any damage and, depending on findings, replacement of the control stick.