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A75 cooling issue

Posted: Sat Oct 23, 2021 17:45
by ChrisS
Hi everyone, I'm new here and could use a little help.

I have a '46 7AC with the STC for an A75 upgrade. Im having some cooling issues and it doesnt look like the HELPS & HINTS #26 - ALTERATION #1 per the STC were done.
The nose bowl cutouts in drawing S-16 is easy but, I cant quite see what the lower cowl cutouts etc looks like. I have all the applicable drawings.

Does anyone have picture of this alteration on their plane that they could share with me before I start cutting up the cowl and the firewall?

Thanks,
Chris

Re: A75 cooling issue

Posted: Sun Oct 24, 2021 05:56
by p3scuba
Chris, in the two attached photos you can see the modifications suggested. I hope these are helpful.

Re: A75 cooling issue

Posted: Sun Oct 24, 2021 14:51
by ChrisS
Holy cow!
those are perfect and just what I needed, thank you.

Chris