Helicopter Bell OH-58D Kiowa Warrior Serial 43270 Register 91-00557 91-0557 used by US Army Aviation Army. Aircraft history and location Aircraft History 91-0557 US Army Aviation US Army 91-00557 91-00557 US Army Aviation 2014-12Dec14 3rd-17th CAV. Send Updates Use APP to upload photo @ (optional) When Now? / / Send