Airline wing attachment

The part you’re looking at in these photos isn’t the wing-body join. This is what connects to that.

The outboard wings (these photos) will either butt up against or slot inside the center wing box.

If they butt together, there will be a monster splice strap between the two, or a whole bunch of tension fittings (“bathtub fittings”). If it slots in, they will match drill through the outer and inner skins and bolt it all together.

These are highly loaded fatigue critical joints…you don’t want a small number of big bolts, you want a huge number of “small” bolts. Small in this context can still be well over 1” diameter and a typical wing joint will have thousands of fasteners.

All four major structure members will be spliced to their center box equivalents (upper panel, lower panel, front spar, rear spar). There will also be individual fittings on each stringer end to pick up that load and put it into the matching center box structure.

Edit: since you asked explicitly, there very much are spar components to the joint. Spars just don’t have stringers so they look different. You can do a lap splice with the spars. You can’t do that with the stringers.

Speed tape.

Thats it.

Working above the head with no safety glasees....

Glad we’re not the only ones still using those trash creepers.

"I wonder what this bolt was for?"