

Many S-61N helicopters are used in off-shore support. An example is this S-61N of KLM Helicopters, now KLM ERA Helicopters.
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Aero Favourite 25
Sikorsky S-61N
The Sikorsky S-61N is one of only few helicopter types that have achieved commercial success in airline service. The basic design was for a military transport helicopter, the Sea King, of which Sikorsky developed two civil models. The S-61L (without floats) flew for the first time on 2 November 1961, followed by the S-61N on 7 August 1962. The helicopter seats up to 30 passengers and is widely used in the oil rig support business. A total of 116 aircraft has been built. The production ended in 1979.
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