Started and completed the installation of a doubler on the upper fuselage skin for a GA-36 or GA-37 GPS antenna. Used the Alodine 1132 pen to protect the metal from corrosion while maintaining the electrical bonding to the skin for the antenna. Continued with the assembly and drilling for most of Section 10. Ended up drilling the 1/4" hole in F-01410C in the wrong hole, so I get to re-order that part. Also had SB 18-09-17 show up on the vans website, so I will order the parts and comply with that before dimpling any of the skin. Should be a relatively easy install since I haven't got to that page yet.