Drill #40 and cleco W21-09 x 8 Clip to W21-13 x 2 Forward Vertical Channel, W21-14 x 2 Aft Vertical Channel. Drill #40 and cleco W21-13 x 2 and W21-14 x 2 to W16-06 Wing Rib #9. I contacted Sonex to find out which direction the wing ribs should be installed. The drawings show the left wing ribs installed with the flange facing both directions depending on which page you look at. DWG's SNX-W14 & SNX-W21 show the flanges of the left side W16-06 Ribs face to the left. SNX-W07 shows the flanges of the left side W16-06 Ribs face to the right. Sonex tech support says DWG SNX-W14 is correct, all W16-06 Ribs face to the left.
