Sikorsky Aircraft Corporation designs, manufactures, and services military and commercial helicopters. It provides fixed-wing reconnaissance aircraft, and civil and heavy lift helicopters, as well as related spare parts. The company also offers maintenance, repair, and overhaul services for aircraft and helicopters. In addition, it provides integrated helicopter services, including helicopter management, maintenance, and charter helicopter flights. The company's helicopters are used by various governments in Argentina, Australia, Austria, Bahrain, Brazil, Brunei, Chile, Colombia, Egypt, Greece, Israel, Japan, Jordan, Malaysia, Mexico, Morocco, the Philippines, the Republic of Korea, Saudi Arabia, Spain, the People's Republic of China, Taiwan, Thailand, Turkey, and the United States. Sikorsky Aircraft Corporation was formerly known as Sikorsky Aviation Corporation. The company was founded in 1923 and is based in Stratford, Connecticut. It has manufacturing and assembly operations in Stratford, Connecticut; Troy, Alabama; and West Palm Beach, Florida, as well as a military aircraft completion center and prototyping facility in Elmira, New York; a commercial aircraft completion center in Coatsville, Pennsylvania; and engineering and design centers in Alabama, Texas, Indiana, Kentucky, and Montana. Sikorsky Aircraft Corporation operates as a subsidiary of United Technologies Corp.