Convair F-106 Delta Dart airplane model. The Convair F-106 all-weather interceptor was developed from the Convair F-102 "Delta Dagger." Originally designated the F-102B, it was redesignated F-106 because it had extensive structural changes and a more powerful engine. The first F-106A flew on Dec. 26, 1956, and deliveries to the Air Force began in July 1959. Production ended in late 1960 after 277 F-106As and 63 F-106Bs had been built.