Made F916C spacers (4), Modify 4 seat ribs for control systems, drill and install nutplates, install center ribs to F705 center Bulkheads assy and F704 center and forward Main Bulkheads Assy, attach rear center section ribs (F915 and 916), Cleco center bottom skin to assy, Fit and drill F623 side corner ribs, made support brackets (Forward and aft F623A attach straps),, cut 1 1/2" holes in F725 Baggage ribs for steps
