Originally Posted by
fezzington
There are 6 seats on 75S and 75E fleet type and 3 on the 75B out of inventory, with the seatbelts being rendered inoperative over the next couple of days. All are middles. They cannot be used under any circumstances, and will go out empty on every leg. It is fleet-wide, effective Nov 1. I seem to recall a similar program some time ago (last year?), but I don't have the details of it handy.
I do not know what the seatmap will look like next to those seats. This is different from the "blocked" seats that are used to accommodate SSR passengers.
Thanks for these details.

I'm puzzled by what I've seen, but this seems quite conclusive.