There are quite a few steps we did some time ago but never posted, because the videos were too short and I was hoping to have more accumulate, so I'll be posting them soon.
On this one, back in Dec 2018, we riveted the remaining stiffener angles to the center section spars, which was the last step for this section:
|Center spar stiffener angle|
Total mid-fuselage bulkhead rivets: 622
Total mid-fuselage bulkhead time: 59.4h