Model Variants (Including Prototypes)
OH-58A - Four-Seat Observation Platform; optional minigun fitting.
COH-58A - Canadian Designation of OH-58A
CH-136 - Canadian Redesignation of COH-58A
OH-58B - Austrian Air Force Export Model
OH-58C - Improved engine; IR suppression; revised instrument panel; night vision support; provision for AIM-92 Stinger anti-aircraft missiles.
OH-58C/S - Stinger-armed OH-58C models
OH-58D - Fitted with mast-mounted sight; new four-blade main rotor system; revised transmission system; digital cockpit.
OH-58D "Kiowa Warrior" - Armed Conversion Model Designation; support for rocket pods, Hellfire AT missiles, Stinger AAMs and various gun pods; uprated transmission system; lighter structure design; IR jammer and RWR; increased MTOW; fitted with laser warning receiver.
OH-58X - Proposed (ultimately dropped) Dedicated Night Flying Model; fitted with chin-mounted specialized night flight systems; GPS.
406CS "Combat Scout" - Saudi Arabian Export Model Designation; delivered sans mast-mounted sight and some avionics; fitted with Saab-Emerson HeliTOW sight instead.
AH-58D - US Army designation for armed OH-58D model for use by Task Force 118 in Operation Prime Chance.
OH-58F - Proposed modernization program; upgraded cockpit and systems.