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Upgross for J3

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Beavercw

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Good day all.

I have a J3 with a C90. It’s a fantastic flying little airplane. It’s certificated gross weight is 1220 lbs. Empty weight is 835 lbs. Essentially, it is a solo airplane.

Has anyone ever done an upgross STC? Another 100 lbs of useful load would be great to get!!
 
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