CH-640 Fuselage Firewall sub-assembly (12 of 52)




Mark the 3/4
Mark the 3/4" hole location through the center channel. Remove this part and drill the 3/4" hole. Place bak into position and drill rivet holes through pre-drilled holes in gear angle. Cleco as you drill. If your gear angle is not pre-drilled then you will need to draw a line 10 mm up from the bottom and 30 mm up from the bottom and mark rivet hole locations AS 5 P30. Do not drill the last 60 mm area, this is where the spar doubler will go later.