QF-106 Delta DartQF 106 Delta Dart airplane model. The 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. The F 106 uses a Hughes MA 1