I am looking for some help from the Bucker community on a BU181 rebuild.

In 1958 the German authority placed a mandatory mod on the wing spares to be strengthened.  
This was known as AD 58-9/1, the document makes reference to a drawing produced by Deutsche Aeroexpress, Hamburg. It is the drawing we are after as this shows the design of the strengthening plates and materials to be used.

Any assistance most helpful.

Regards

Tim Rayner, Scotland.
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