Countersink rivet holes in F-6117A break side plates and F-6117BPP break plates. Layout, mark and drill rivet holes in F-6118 rudder pedal brace as per DWG 37. Trim F-6118 rudder pedal brace flange to clear firewall recess. Layout, mark and cut lightening holes in F-6118 as per DWG 37. Mark and drill bolt holes in F-6115 center rudder pedal bearing block and both F-6116 side rudder pedal bearing blocks as per DWG 37.