Located and drilled 3/4" hole for pitot/Static tubes. Drilled 4 #30 holes for attachment of the tubes to the skin. Positioned and drilled the strut fitting assembly. Trimmed the doubler to fit the attachment bracket. Will add the A5 rivet hole when doing final riveting of bottom skin and all is re-positioned. I did rivet the doubler to the angle after deburr/cortec. Began disassembly and deburring of bottom skins.