page_title: McDonnell Douglas MD 500 Defender
section_title: Military operators
hierarchical_section_title: McDonnell Douglas MD 500 Defender / Operators / Military operators
caption_attribution_description: English: MD-500 Korean Army
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:  Afghanistan
  Afghan Air Force
   Argentina
  Argentine Air Force
   Chile
  Chilean Army
   Colombia
  Colombian Air Force
   El Salvador
  Air Force of El Salvador
   Finland
  Finnish Army
   Italy
  Italian Air Force
   Japan
  See Hughes OH-6
   Kenya
  Kenyan Army
   South Korea
  Republic of Korea Air Force
  Republic of Korea Army
   Lebanon
  Lebanese Air Force (6 on order)
   Malaysia
  Malaysian Army (6 on order)
   Mexico
  Mexican Air Force
   Panama
  Servicio Nacional Aeronaval
   Philippines
  Philippine Air Force
   Republic of China (Taiwan)
  Republic of China Navy
   United States
  United States Army (See A/MH-6)
caption: A Republic of Korea Army MD-500
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