McDonnell Douglas MD 500 Defender
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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.
McDonnell Douglas MD 500 Defender
Korean Air Unmanned System-Vertical Helicopter (KUS-VH)
ROCN Hughes 500MD/ASW Defender 6910 carried on Lan Yang (FFG-935)
Philippine Air Force MD 520MG light attack helicopters
MD Helicopters MD 500
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The MD Helicopters MD 500 series is an American family of light utility civilian and military helicopters. The MD 500 was developed from the Hughes 500, a civilian version of the US Army's OH-6A Cayuse/Loach. The series currently includes the MD 500E, MD 520N, and MD 530F.
MD Helicopters MD 500
A Hughes 500C (Model 369HS)
A Hughes 500D
A NOTAR MD 520N