TOP 10:Helicopters - OH-6 Cayuse(No.5)

'The Hughes Helicopters OH-6A Cayuse (nicknamed Loach) is a single-engine light helicopter with a four-bladed main rotor used for personnel transport, escort and attack missions, and observation. The MH-6 and AH-6 (nicknamed Little Bird) were originally modified OH-6As used for special operations aviation, they have since been developed into single-engine light helicopters with a single five-bladed main rotor, based on the MD 500E. The newest version, the MH-6M, is based on the MD 530F and has a single, six-bladed main rotor and four-bladed tail rotor. Hughes also developed the Model 369 as a civilian helicopter, the Hughes Model 500, currently produced by MD Helicopters...'

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http://en.wikipedia.org/wiki/Hughes_H-6