MANUFACTURER: LETECKE ZAVODY a.s. SUBJECT: Airworthiness Directive 2005-08-14 SUMMARY: 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.