From PikkaWikiThe Sikorsky S-61 is a helicopter in av8.
|Capacity||28 pax & 10 mail, or 30 crates of goods|
The Sikorsky S-61 is the civilian equivalent of the UH-3 Sea King. It is widely used as an airliner and oilfield support aircraft. Based on name and statistics, it appears to be the basis for Transport Tycoon's "Sikorsky Helicopter".