Back riveted rest of E-1008 rib halves to elevator skins. Riveted Rear spar E-1007 and two E-1022 Shear clips to elevator rib halves. Riveted E-921 Elevator Gusset in place. Riveted rear spar to elevator skins. Riveted E-1008 rib halves together. Riveted front spar assembly to elevator.