OH-58 Bell Kiowa. 1967-… 4 seat observation / utility / reconn. Served with OH-6 Cauyse in Vietnam. OH-58D armed model. 117/138 mph. Army has tried several attempts to replace i with an upgraded aircraft: LHX [RAH-66 cancelled in 2004], AHIP program [RAH-66 in 2008], then Armed Reconn Helicopter [Bell ARH-70], Armed Aerial Scout [canceled]. Upgraded OH-58D/F Kiowa Warrior remain in service.