Comlux Aviation placed the first-ever order for an Airbus ACJ321 at the Dubai Air Show yesterday, expanding the Airbus Corporate Jet offerings. The ACJ321 will have the widest and tallest cabin of any business jet based on a single-aisle airliner and more floor space and baggage capacity than the ACJ318, ACJ319 and ACJ320, Airbus says. Comlux America will outfit the ACJ321, which will enter service in 2014.