After the fuselage is removed from the main fixture, secondary jigs are used to attach all ancillary parts, including fittings, door sheet metal and bushings and tabs required to attach various systems. One of the customer purchase options is to buy the fuselage as it comes out of the main jig with only the wing, landing gear and horizontal tail fittings welded in place. The next level is the entire fuselage with all welding finished, the landing gear and shock struts and the entire tail group ready to attach.

     Below are some secondary jigs which locate different fuselage parts in their proper location. With all this jigging, tolerances are very tight and variation in the dimensions of the parts is eliminated or minimal.