Drilled the trailing edge doubler and dimpled the skins trailing edges. Reassembled and drilled the root and tip ribs on the upper side. I then temporarily fitted the trim tab to the elevator to drill the lower skin to the spar, then drilled the lower skin to the tip rib. I then disassembled for further deburring and dimpling in preparation for riveting.
The lower root rib holes will be drilled in conjunction with the actuator brackets.
