Summary
We propose to adopt a new airworthiness directive (AD) for all Glasflugel Models H 301 "Libelle,'' H 301B "Libelle,'' Standard "Libelle,'' and Standard Libelle-201B sailplanes. This proposed AD would require you to replace the rudder actuator arm (manufactured according to drawing No. 301-45-10) with an improved design rudder actuator arm (manufactured following drawing No. 301-45-13). This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are proposing this AD to detect and correct damage to the rudder actuator arm, which could result in failure of the rudder actuator arm. This failure could result in reduced or loss of rudder control.