pdf Gfa ad 578 issue 2 Popular

INSTALLATION OF A NEW PROPELLER HUB AND SPINDLE OVERLOAD DEVICE  

Issue 1 of this AD required the installation of a new propeller hub and spindle overload device to be fitted to the Ventus-2cM, the Discus bM and the Nimbus-4DM powered sailplanes. This pursuant to LBA AD 2002-199 and Schempp-Hirth Technical Note Nos 825-31, 863-7 and 868-5 of 19 June 2002. The Schempp-Hirth factory has since determined that, although the replacement of the new propeller is still necessary on all the listed aircraft, the spindle overload device is now only necessary on the Nimbus-4DM in the applicable serial number range listed. Accordingly the factory has issued a new version of the Technical Note and the LBA has issued a revised AD to reflect this change.

Issue 2 of AD 578 is produced as a consequence of the above named German documents and clarifies that the replacement propeller hub is required on all the listed types, but the spindle overload device in required on the Nimbus-4DM only. Luftfahrt-Bundesamt (LBA) Airworthiness Directive No. 2002-199/2 and Schempp-Hirth Technical Note No. 825-31, 863-7 and 868-5 of 15 November 2002 form part of this AD and supersede the equivalent documents which formed part of Issue 1 of AD 578.