Berchmans
Well Known Member
I am at the point of assembling the fuselage and making the attachment of the mid cabin brace to the center section. The drawings show a AN 4 bolt being installed the where the mid cabin brace attaches to the spar. The pre-existing hole where the bolt is to be installed will need to be drilled out significantly for a AN 4 bolt. I was wondering if the bolt should infact be an AN 4 or other...any input would be appreciated. Naturaly I don't want to go and drill something if it migh compromise the spar strength. The instructions are silent on enlarging these holes for the brace...