If you're really serious, you might be able to do that using an FAA Form
337.

https://www.faa.gov/forms/index.cfm/...umentID/185675

On 5/19/2015 10:11 PM, Ross wrote:
On Tuesday, 19 May 2015 18:49:20 UTC+2, JS wrote:
There's a winglet kit for Discus B/CS on the M+H website.
http://mandhsoaring.com/forsale.html
Better than original. Aren't the Maughmer winglets approved mods?
Jim
Hi Jim,

If only it were that easy here.
The only certified winglet is the std winglet. I would happily change if I was legally allowed to do it.
Ross

--
Dan Marotta