Brief Description: Upper skin fitting on replacement left flap
Next, the upper skin was installed on the spar substructure assembly with clamps such that it could be installed on the wing assembly to set the chord length fit with the aileron. Once rigged, the flap was removed from the wing and drilled as show in the images below
Drilling the upper wing skins to the spar
Holes were located in the upper skin for ribs as well
