Completed step 4 page 21-07 - Installed the six nutplates, shown in Figure 1, along the forward edge of the F-1225-L & -R Seat Floors, then rivet them to the seat floors using the rivets called out. Completed step 6 - Riveted the F-1225-L Seat Floor to the remaining Left Seat Rib Assembly (except for the hole indicated) and the Flaperon Mixer Bracket I Seat Rib Assembly using the rivets called out in Figure 3. Completed step 7 - Dimpled the nutplates shown in Figure 3, then riveted them to the Flaperon Mixer Bracket I Seat Rib Assembly and to the F-1225-L Seat Floor using the rivets called out. Temporarily installed an 8-32 screw in the MS21051-L08 nutplate to prevent misalignment while riveting. Completed step 8 - Using the rivets called out in Figure 3, riveted the F-1253-L Seat Floor Support to the bottom of the F-1225-L Seat Floor as shown. Did not install a rivet in the aft most and forward most hole as indicated. Completed step 1 page 21-08 - Riveted the F-I 225-R Seat Floor to the remaining Right Seat Rib Assembly (except the hole indicated) and the Pulley Bracket I Seat Rib Assembly using the rivets called out in Figure I. Completed step 2 - Dimpled the nutplates shown in Figure I , then riveted them to the Pulley Bracket Seat Rib Assembly and to the F-1225-R Seat Floor using the rivets called out. Temporarily installed an 8-32 screw in the MS21051-L08 nutplate to prevent misalignment while riveting. Completed step 3 - Using the rivets called out in Figure I , riveted the F-I 253-R Seat Floor Support to the bottom of the F-I225-R Seat Floor as shown. Did not install a rivet in the aft most and forward most hole as indicated. Completed step 4 - Install the snap bushings called out in Figure 1. Completed step 5 - Riveted the Left and Right Seat Floor Assemblies to the F-1204A Center Section Bulkhead using the rivets called out in Figure 2.
