Position & install wing root nose rib

Root nose rib placement

Root nose rib doubler spanning nose and main ribs across the spar.

The wing root nose rib is positioned flat against the bottom of the root main rib and spar by clamping a straight edge along the bottom of the spar.  The root main rib has been removed for alignment.  The nose & main ribs will be riveted together using A5 rivets after deburring and corrosion protection.  A doubler will be positioned on the root end of the rib as well.  Note that A5 rivets are required because of the thickness of the spar.