Thực đơn
Sikorsky S-52 Tham khảoThực đơn
Sikorsky S-52 Tham khảoLiên quan
Sikorsky UH-60 Black Hawk Sikorsky CH-53 Sea Stallion Sikorsky CH-53E Super Stallion Sikorsky H-34 Sikorsky H-5 Sikorsky H-19 Chickasaw Sikorsky Ilya Muromets Sikorsky R-4 Sikorsky S-52 Sikorsky S-38Tài liệu tham khảo
WikiPedia: Sikorsky S-52 http://www.flightglobal.com/pdfarchive/view/1953/1... http://www.helis.com/database/model/1141/ http://www.vertical-aviation.com/pdf/Hummingbirdlo... http://www.globalsecurity.org/military/systems/air... https://commons.wikimedia.org/wiki/Category:Sikors...