Glaser-Dirks Flugzeugbau Model DG-100 and DG-200 series sailplanes SAIB CE-10-02 & CE-10-03

FAA Aircraft Certification Service
SPECIAL AIRWORTHINESS INFORMATION BULLETIN
SAIB: CE-10-02
SUBJ: Flight Controls: Aileron Control Rod End
Date: October 7, 2009
This is information only. Recommendations aren’t mandatory.
Introduction
This Special Airworthiness Information Bulletin informs you of an airworthiness concern on all variants of Glaser-Dirks Flugzeugbau Model DG-100 and DG-200 series sailplanes, all serial numbers, except for the Model DG-100 sailplanes.
Background
During a pre-flight inspection of a DG-100 sailplane, the rod end of the aileron control push-rod at the control column was found broken. An investigation revealed that the broken rod end was made from inappropriate machining steel. DG Fluzeugbau has issued Technical Note No. 301/25, 323/16 to establish corrective actions.
The European Aviation Safety Agency (EASA) has issued Emergency Airworthiness Directive No. 2009-0167-E, dated July 30, 2009. This AD requires a before-further-flight inspection and possible replacement of the aileron control rod end. SAIB Attached

SAIB: CE-10-03
SUBJ: Flight Controls: Elevator Control Bearing Stand
Date: October 7, 2009
This is information only. Recommendations aren’t mandatory.
Introduction
This Special Airworthiness Information Bulletin (SAIB) informs you of an airworthiness concern on Glaser-Dirks Flugzeugbau Model DG-100G sailplanes, serial numbers 5 and 21 through 103.
Background
In 1978, DG-Flugzeugbau issued Technical Note No. 301/6, which recommended an inspection of the elevator control bearing stand RU19 for correct production. SAIB No. ACE-98-19 was issued by
the FAA to address this concern. In 2009, an accident occurred with a DG-100. The suspension bolt was found torn out of the bearing stand making the elevator uncontrollable. An investigation
confirmed that the bearing stand had not been produced correctly. It is therefore assumed that the inspection per TN 301/6 did not produce reliable results. As a consequence, DG Flugzeugbau has issued Technical Note No. 301/26, which recommends a before-further-flight inspection and possible replacement of the bearing stand with a reinforced version. This condition, if not corrected, may lead to loss of control of the sailplane.
The European Aviation Safety Agency (EASA) has issued Emergency Airworthiness Directive No. 2009-0163-E, dated July 29, 2009. This AD requires a before-further-flight inspection and possible replacement of the elevator control bearing stand RU19.

SAIB Attached