Airworthiness Directives; LET a.s. Model Blanik L-13 AC Sailplanes

The FAA adopts a new airworthiness directive (AD) for all LET a.s. (formerly LET n.p.) (LET) Model Blanik L-13 AC sailplanes. This AD requires you to replace the original control bridge with the new strengthened control column mounting bridge. This AD is the result of a report of one case of cracks in the attachment of control levers on the control bridge. We are issuing this AD to correct cracks in the bedding of the front and rear control levers, which could result in failure of the control bridge for the sailplane. This failure could lead to loss of sailplane control.