Drill #40 and cleco F23-12 x 2 Aft Cross Tie Clip to F26-01L & R Left and Right Hand Aft Fuselage Side Panel Skin. Drill #40 and cleco F23-05L&R Left and Right Hand Mount Assembly to F26-02L&R Left and Right Hand Upper Longeron. Drill #30 and cleco F23-05L&R Left and Right Hand Mount Assembly to F26-02L&R Left and Right Hand Upper Longeron and F23-03 Upper Cross Tie #3.