
Boeing [BA] has achieved a milestone by starting production of the KC-46A aerial refueling tanker, according to a company statement. Boeing workers in Everett, Wash., yesterday loaded the first wing spar, the main structural component of the wing. Checking in at 82 feet, five inches, the spar provides critical support for flight loads and the weight of wings when the plane is not flying. The wing spar load for Boeing's first KC-46A tanker. Photo: Boeing. The KC-46A’s next major contractual milestone,…