CH-640 Fuselage rear fuselage floor sub-assembly (6 of 47)




Mark the bottom skin 20 mm from bottom and draw a line across it.  Over lap the rear bottom skin up to this line and drill rivet holes A4 pitch 35.  Be sure to leave a space on both sides for the longerons.  I started at the center line which made for a nice even space on each side.
Mark the bottom skin 20 mm from bottom and draw a line across it. Over lap the rear bottom skin up to this line and drill rivet holes A4 pitch 35. Be sure to leave a space on both sides for the longerons. I started at the center line which made for a nice even space on each side.