Completed steps 1-4 page 18-05. Riveted A-1207-L actuation bracket, A-1206 pivot brackets and A-1203 spar together per Figure 1. Clecoed then riveted A-1205 main ribs to A-1203 spar. Clecoed the inboard nose rib and bracket, A-1210-R inboard nose rib and remaining 2 A-1205 main ribs, A-909/A-1204-L&R to A-1203 spar and riveted per step 4 and Figure 1
