the S-58B S-58DT Turboshaft-powered conversion of the S-58D S-58ET Turboshaft-powered conversion of the S-58E S-58FT Turboshaft-powered conversion of the S-58F S-58HT Turboshaft-powered conversion of the S-58H S-58JT Turboshaft-powered conversion of the S-58J Orlando Heli-Camper / Winnebago Heli-Home RV conversion by Winnebago Industries and Orlando Helicopter, fitted with a Wright Cyclone R-1820-24 engine Orlando Airliner Commercial conversion. 18-seat passenger transport helicopter. Westland Wessex Licence production and development in the United Kingdom. Operators Argentine Air Force Argentine Naval Aviation Belgian Air Force Belgian Navy Brazilian Navy Royal Canadian Air Force Canadian Armed Forces Chilean Navy Ministry of Public Security French Army French Navy German Air Force German Army German Navy Haitian Air Corps Indonesian Air Force Italian Air Force Israeli Air Force Japan Maritime Self-Defense Force Khmer Air Force Kingdom of Laos Royal Lao Air Force Royal Netherlands Navy Fuerza Aérea Sandinista Philippine Air Force Republic of Vietnam Air Force Republic of China Army Royal Thai Air Force Air America United States Air Force United States Army United States Marine Corps United States Navy United States Coast Guard Uruguayan Navy Accidents and incidents 27 July 1960 Chicago Helicopter Airways Flight 698 a S-58C registered N879 crashed into Forest Home Cemetery, Forest Park, Illinois, United States with the loss of 11 passengers and two crew. The investigation concluded that the helicopter became uncontrollable as a result of structural disintegration in flight caused by a fatigue failure of the main rotor blade. 14 November 1971 Sikorsky SH-34J, A-062 of the Uruguayan Navy lost control after trying to lift a ground vehicle in an airshow, the helicopter fell to the ground hitting another Sikorsky SH-34J Helicopter. The broken blades flew directly into the audience of the airshow killing 8 people and severely injuring and mutilating at least 40 more. Due to the unstable political situation of the country at the time, no investigation followed the accident. Several years later, many irregularities came to light: The helicopter condition was not good when it was purchased by the Uruguayan Navy, fuel used was not appropriate, temperature on the day of the accident was too high to attempt a heavy lift, and the co-pilot of the helicopter was a fixed wing pilot with no experience in rotary wing aircraft. 10 July 2002 Sikorsky S-58ET, N580US (S/N 58-1673, built 1963), struck power transmission lines with its tailwheel, ripping the aircraft in two, over Brookville Lake, Indiana. One crew member