-Gently hammered (rubber mallet) in and bolted the rear seat belt brackets between the lower longeron and upper bracket...good thing I lubed in between them when I riveted it together, because it needed all the help it could get in such a tight spot! -Riveted the F806 bulkheads to their respective gussets. The plans called for the same with F805 bulkhead but I had already done this task earlier in the construction. -Riveted the floor support angle to the F805 bulkhead and seat rib angle per the plans. -Riveted the outboard end of the F860A armrest where it rivets the center section bulkheads (F804C)