PIn tip rib to spar.Fit and drill hinge pin onto tip ribs.Center box and ribs.Ribs all pinned.Rear skins pinned with trim tab hinge.Fitting nose skins with holes drilled in nose ribs.Fitting elevator horns top and bottom.Holes drilled to final sizes using rear skins to guide holes in nose skins.Layout servo cuts with servo inverted on outside of top skin.Cut marked using skin and servo layout.Hole cut and filed smooth.Corrosion proofing applied.Servo wire splice – 5 core shielded teflex.Servo connection test bed.Servo mounted inside top skin.Wires run through rib grommet.All pinned again for rivetting.Ready to fasten to horizontal stabiliser.