Hello everypody.

Its my first time honor to be in this forum...

Lately i have purchased a used 601ul and would like to have aa biĝer MTOW then what is permited now in the aircraft doc 480kg.

Does anyone familiar with such a procedure?

Thanks for help!

Barak Ohana.

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The UL is a lighter version of the HD.  I would call zenith and ask if tgere are mods to upgrade the structure.

Thanks Larry.

I mailed them twice -they ignore me.

Is there a "special" way to address them?



Remember the time zone difference.  I would call directly and talk to roger.  That is about the best solution I can think of.  But  it may be easier just to leave it as a UL.  You would need to research the designs and see what the differencesare between the UL and HD.

Hi larry..

Thanks again for your reply !

Can you please tell me where can i find his contact details?


Best regards,


Zenith aircraft's number is 573-581-9000. Remember time zone differences.


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