A method and apparatus for manufacturing a structure. A part for the structure may be supported on a plurality of mobile fixtures configured to control an orientation of the part. The part for the structure may be moved using the plurality of mobile fixtures to a number of stations for performing a number of operations for manufacturing the structure using the part. The plurality of mobile fixtures may be configured to move in a coordinated manner and substantially maintain a desired orientation for the part while moving the part to a station in the number of stations. The number of operations for manufacturing the structure may be performed at the number of stations while the plurality of mobile fixtures supports the part.