A recent report has been received concerning a problem with the elevator
control during the take-off of an ASK 13 sailplane.
The results of the technical investigation revealed a misalignment in the
automatic elevator control connection, presumably caused by an incorrect
repair or damage at the tailplane area. In addition, similar elevator connection
failure during early 1960`s led to the issuance of LBA LTM 4/62. However, LTM
4/62 did not apply to ASK 13 and ASK 18 sailplanes coming later into
production.
This condition, if not detected and corrected, could lead to failure of the
automatic elevator control connection, possibly resulting in loss of control of the
sailplane.
To address this unsafe condition, Alexander Schleicher GmbH issued a
Technical Note (Ka 6 TN-Nr. 26; K 7 TN-Nr. 24; K 8 TN-Nr. 30; ASK 13 TN-Nr.
19; ASK 18 TN-Nr. 9) providing instructions for elevator control inspection and
replacement.
Zie:
http://ad.easa.europa.eu/ad/2012-0246
