As per the Construction Manual: Cleco the F-814C-R-1 Inboard Seat Rib Angle, and the F-805D Bracket, to the F-814A-R-1 Fwd Inboard Seat Rib. Rivet together all the parts clecoed to the Fwd Inboard Seat Rib (refer to F-814A-1 & F-814B-1 Fwd Inboard Seat Rib Rivets). Repeat the previous three steps for the F-814A-L-1 Fwd Left Inboard Seat Rib Assembly. The only difference being a second F-814HPPX in place of the F-814J Fwd Seat Belt / Vent Anchor. Cleco the F-814A-L-1 & -R-1 Fwd Inboard Seat Rib Assemblies, and the F-814B-L-1 & -R-1 Aft Inboard Seat Ribs to the F-806B-1 Rear Spar Attach Bulkhead Assembly, and to each other (See “Seat Ribs”, DWG 65). Rivet the aft inboard seat ribs to the F-814C-1 Inboard Seat Rib Angles. Rivet the fwd and aft inboard seat ribs to the Rear Spar Attach Bulkhead Assembly.