So why do we keep track (from time to time) of ACC? We like ACC because it’s an example of good ole American homegrown ingenuity. ACC’s aircraft are Shorts 330s and Shorts 360s, which were once commuter passenger aircraft. Shorts was once an independent aircraft manufacturer based in Belfast, Northern Ireland, now no longer building aircraft but instead a parts-manufacturing division of Bombardier. The Shorts factory is at Belfast City Airport, which in recent years has taken an increasing share of traffic into that city (versus Belfast International).