The Cessna Citation CJ3+ is latest jet upgrade from the Wichita, Kan., manufacturer’s stable of business jets to win approval from the Federal Aviation Administration, which it did in early in September. The new light-jet model was announced in March, first flew in July, moved swiftly through the flight-test regimes, and is now ready for deliveries. The main changes from the earlier version, which first flew in 2003, aim to provide simpler operations for a single pilot. The cockpit has been switched from Rockw…