Airworthiness Directives; LETECKÉ ZÁVODY Model L 23 SUPER-BLANIK Sailplanes
The FAA adopts a new airworthiness directive (AD) for certain LETECK[Eacute] Z[Aacute]VODY Model L 23 SUPER--BLANIK sailplanes. This AD requires you to do a repetitive, non-destructive magnetic test (NDMT) inspection on the elevator rocker lever (part number A 730 201 N) for cracks. If cracks are found, this AD also requires you to return the part to the manufacturer. The manufacturer will send you a replacement part for installation. Installing the improved replacement part terminates the need for the repetitive inspections. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the Czech Republic. We are issuing this AD to prevent failure of the elevator rocker lever caused by cracks that resulted from a defect in prior manufacturing procedures. Such failure could lead to loss of control of the sailplane.