What's the best way to get to U channel when replacing a section?

[kramynot2000]

Well I've pulled all the old carpeting out of our '78 Sovereign and found a few sections of the floor I need to replace. One section is in the rear where I have about 1/4" of separation. My plan is to cut out the small floor sections and then slide in replacement pressure treated plywood. From reading past posts on this site, it seems that the plywood needs to be bolted to the frame and then the U channel screwed to the plywood floor and then the skin rivetted to the U channel, right?


So, to access the U channel I'm thinking I should I drill out the rivets in the interior skin and peel that back. Then I can screw the U channel to the plywood and then re-rivet the interior skin. Is this the best way to approach this? From what I can see in the little crack, the U channel seems to be in good condition, not rusty at all.

Also, I read an Airstream technical bulletin that discussed bolting the U channel through the plywood and onto the frame below. Seems I should do that as well and it would be easy to do if I have the interior skin pulled back.

Anyway this all doesn't really sound too difficult. Am I missing something?

Thanks,
Tony