Disassemble F16-09 Floor Stiffener & F17-12 Aft Clip, F17-11 Gussett. Cleco F16-09 to F16-01 Forward Fuselage Floor, drill 4 remaining holes #40, #30. Disassemble & debur both. Rivet F16-09 & F17-12 Cleco to F16-01 Forward Fuselage Floor: F10-13 L&R Seat Belt Attach F09-02 Seat Belt Attach Assembly F10-09 L&R Support Channel F10-12 Center Support Channel Cleco F10-14 x 2 Gussett Cleco F10-15 Gussett Begin riveting all parts above (top sides and all else accessible), but not to F16-01 Forward Fuselage Floor. Remove and finish riveting all parts. Cleco & rivet F10-07 L&R Idler Bracket to F10-16 Idler Assembly then cleco & rivet F10-16 to F09-02 Seat Belt Attach Assembly.