Drill #40 & cleco F17-01 Firewall to F16-09 Upper Firewall Cross Tie, & cleco to F14-05L & R Upper Firewall Attach Angle. Actual width @ outside edges of F13-02L & R Upper Longerons is 32 1/8". DWG F12 calls for a width of 32", but the holes in the firewall line up with the attach angles. Drill #40 & cleco F17-08 Firewall Stiffener to F17-01 Firewall. Drill #40 & cleco bottom of F17-01 Firewall to F16-01 Forward Fuselage Floor. Drill #40 & cleco both sides of F17-01 Firewall to F14-04L & R Firewall Attach Angle.
