Riveting the Ribs to the Wing Spar - N622RV Watch in HD on YouTube! Share on Facebook! Today in the hangar, I finished the blind riveting of the ribs to the wing spar using a tool that allows you to angle rivet. I also primed the flap and aileron fairings. I performed the final QA on the torquing of the AN bolts. Once I verified the proper torque of the nuts, I placed torque indicators on each nut.