Brief Description: Center Fuselage - Crotch Strap Brackets
Tonight I installed the nutplates in all of the crotch strap brackets and installed the right brackets between the second and third ribs from the centerline of the fuselage. Because I could get good access I used AN470-4-4 rivets instead of the LP4-3's called out on the drawing.
To help ensure proper alignment I clecoed the ribs to the 704 bulkhead, then clecoed the brackets to the ribs. I riveted the outside rib to the brackets, but couldn't reach the inside because I’d already installed the inboard most ribs, so I removed the ribs from the bulkhead and clamped one to the table to stabilize the assembly (photo 1).
Rivets Today: 36 Rivets Total: 9787
I clamped the seat ribs to the bench for stability while riveting the crotch strap brackets.