page_title: McDonnell Douglas MD 500 Defender
section_title: Variants
hierarchical_section_title: McDonnell Douglas MD 500 Defender / Variants
caption_attribution_description: 中文（繁體）‎: 巡防艦蘭陽（FFG-935）艦尾直升機甲板上搭載的休斯500直升機6910右後方，攝於2014年左營軍港營區開放活動。
context_page_description: The McDonnell Douglas Helicopter Systems MD 500 Defender is a light multi-role military helicopter based on the MD 500 light utility helicopter and OH-6 Cayuse Light Observation Helicopter.
context_section_description: 500D Scout Defender
  Armed reconnaissance version
  500M Defender
  Military export version of the 500 and 500C, built under license by Kawasaki in Japan (as the OH-6J) and Breda Nardi in Italy.
  500M/ASW Defender
  Export version for the Spanish Navy.
  NH-500E built under license by Breda Nardi (Agusta) since 1990
  NH-500M Defender
  Italian-built version of the 500M Defender. Licensed by Breda Nardi before merge with Agusta.
  500MD Defender
  Military version of the 500D. Korean Air's aerospace division from 1976 to 1984 with 200 choppers made. 50 were armed with TOW anti-tank missiles and 150 choppers used for transportation and support duties.
  500MD/ASW Defender
  Maritime version of the 500MD Defender. Equipped with a Bendix RDR-1300 search radar in a nose cone offset to the port side, and a towed ASQ-81C(V)2 magnetic anomaly detector (MAD) at the starboard fuselage. Up to two Mk44 or Mk46 are carried underneath the fuselage, which can be replaced by smoke markers.
  500MD/TOW Defender
  Anti-tank version of the 500MD Defender, armed with TOW anti-tank missiles.
  500MD/MMS-TOW Defender
  Anti-tank version, fitted with a mast-mounted sight, armed with TOW anti-tank missiles.
  500MD Quiet Advanced Scout Defender
  Fitted with noise suppression equipment.
  500MD Defender II
  Improved version.
  500MG Defender
  Military version of the 500E.
  520MG Defender
  Philippine military version.  Special Forces version. Modified 500MG Defender that carry .50 caliber machine guns and 7-tube rocket pods and operates as a light attack aircraft.
  520MK Black Tiger
  South Korean-built military version, built by Korean Air Aerospace Division
  530MG Defender
  Military version of the 530F.
  MD530 Nightfox
  Night attack version.
  MD530MG Paramilitary Defender
  Police or border patrol version.
  MD540F
  Upgraded MD530F, incorporating a 6-bladed, fully articulated rotor blade system made of composite material, a more rugged landing skid for heavier take-off and landing weights, a fully integrated digital glass cockpit with multi-function color displays and a pilot Helmet Display and Tracking System (HDTS), which couples together a targeting FLIR and laser designator.
  MD530G
  Designed based on the MD 530F airframe and is engineered with advanced technology to deliver enhanced combat capabilities.
caption: ROCN Hughes 500MD/ASW Defender 6910 Carried on Lan Yang (FFG-935)
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