Fitted the shoulder harness anchor left and right. Drilled, deburred and primed. Fitted the F-656 L&R plates, drilled, deburred and primed. Riveted the gusset plates in place. Riveted the vertical channel to the F-706 bulkhead. Fabricated the F-635 Bellcrank, drilled the VA-146 flange bearing. Deburred and primed all the associated parts. Riveted the assembly. Fabricated the F-635C spacers, and temporarily installed the bellcrank. Cleco'd the aft top skin in place.