looking for replacement for discontinued Anderson split arm crank

A handy person from Minneapolis, MN says:
Hi,
I've gathered that this part is discontinued and that there is an adapter that matches the hole pattern, but I can't find a crank with the same arm configuration.

Thanks,
Matt
User submitted image of their window hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
I believe you could use 39-264 operator along with the 39-362 mounting plate to replace this older style window operator. I also see that you have the sash bracket still attached to the end of your operator arm. You will need to reuse that for the new operator.
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
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Anatomy of a casement window
Anatomy of a casement window
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