Air Algérie Flight 5017  was operated by an airline headquartered in what country?
Air Algérie Flight 5017:  The McDonnell Douglas MD-83 with 110 passengers and 6 crew on board, operated by Swiftair for Air Algérie, disappeared from radar about fifty minutes after take-off. Swiftair: Swiftair S.A. is an airline headquartered in Madrid, Spain.
Spain