Problem with wing mounting bolts

Just in time - before riveting the side skins into place - I realised that the bottom outermost wing mounting bolt - if fitted head forward - could not be removed. This is due to interference with the outer floor stringer. I confirmed that Sling installs this bolt tail forward to avoid this problem. Access to the nut can be gained though a small opening in the outer skin just forward to the spar carry-through. Sling also mounts the top outermost wing bolt tail-forward to permit to solve an access issue once the outer seat rail is installed. Due to the fold angle of the aft spar carry-through it is not really possible to get a wrench into position over the nut, if it were to face aft.

The instructions have not been updated.