Fitted the two shoulder harness attach points. Began by measuring and drilling a 20 pitch rivet line along the outboard length of each attach point. Then I clamped them into position (180mm aft of the upper seat back) and drilled through the rivet line in each attach point into the upper longeron. Once all the pilot holes were set, I updrilled both attach points to A5 (final) rivet size. Finally, I deburred, filed, and sanded the attach points and upper longeron to prep them for final riveting.
I'll delay the final riveting until the baggage floor (turtle deck) is installed and the canopy frame is in place. Except for the riveting, I believe this is the final piece for the fuselage section (the 6-B-x plans pages).
Shoulder harness attach point from behind after drilling out pilot holes.
Left attach point clecoed in place as viewed from the right side.
