Fastened ribs to spar Fastened trim spar to root rib Fastened counterbalance ribs to spar Fastened elevator horn to spar and root rib Bent tabs on elevator skin and fastened using blind rivets Sealed stiffened ends to protect against vibration Fastened lower skin to ribs and spar Fastened counterbalanace ribs to counter balance skin Fitted counterbalance weight Fastened upper skin / outboard of trim spar
