One of a kind - New Zealand's Sikorsky S-55B

Radial fixed-wing aircraft are a rare species these days, and radial helicopters even rare. But in the North Island there is such an aircraft, the Sikorsky S-55B ZK-HSB. The aircraft is still earning a dollar for its masters 50 years after the type first flew and Clive Wilkinson takes a brief look at this rather interesting and unique helicopter.

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