The U.S. Navy rapidly delivered and approved the use of additive manufactured dorsal assembly ribs to keep T-6B Texan II training aircraft in the air. Following a series of routine inspections the service determined the aircraft’s ribs needed to be replaced, a Sept. 20 service statement says. The dorsal assembly rib extends from the aircraft’s rear fin towards its nose and helps provide directional stability during asymmetrical flight, such as when it encounters crosswinds. The ...


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