Clecod front supports and doublers to front spar and to each other to verify proper fits. Riveted attachments and doublers to spar then riveted them to each other. Must be done in this sequence; if the attachments and doublers were riveted first the back of the pulled rivets would be over the doubler rivets, preventing access to the puller.
Clecod the ribs to the spars using the 5/32" holes then riveted all of the A4's including the end rib angle attachments. Removed clecos then pulled all the A5's.
