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Airworthiness advisory Towing winch Wesselmann II DHV 05-0006-92

SubjectTowing winch Wesselmann II DHV 05-0006-92

For several winch tows of the type Wesselmann II, when measuring the pulling force in line feed operation (strong wind, gusts), a considerable overstepping of the permitted regulating values was identified. This led to uncontrolled failure of the weak links in the line and in one case to pilot injury.

In agreement with the holder of the type certification Ingo Rohardt, Banzgraben 35, 22459 Hamburg, Tel: +49 (0)40 5521270 the DHV has decided on the following safety measures:

All winch tows of the model type Wesselmann II must have the pulling force regulating system modified by the holder of the type certification.

This airworthiness instruction came into force when published in the News for Paragliders and Hang Gliders (NfGH). The safety measure must be carried out before the next periodic maintenance check.

Gmund, 23. February 1999

Martin Jursa, DHV/OeAeC Technical Dept.