Brief Description: Final Drill, Debur, Dimple Aileron Skin and Stiffe
21-3: Step 7 and 8: Final drilled #40 L and R skin holes common to the stiffeners. I had removed protective blue coating from inside of skins except where the trailing ends would be Prosealed. Also removed protective coating on the outside rivet lines.Deburred and scuffed all for priming.
