Up drilled LH fuselage side skins and splice plates. Countersunk top longeron for flush hardware. Up drilled forward fuselage floor including bolt holes. Aligned P13-08 lower cowl hinge half then drilled and clecoed to lower firewall. Up drilled lower firewall. Up drilled upper cross tie including countersinking holes for flush screws. Up drilled fuselage and floor stiffeners including all gussets. Up drilled upper firewall. Checked alignment and squareness of fuselage. Using angle drill, up drilled forward and aft spar tunnel webs from inside spar tunnel. Disassembled forward fuselage to deburr and prep parts.
Hours Worked: 4.92
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