Airbus is seeking FAA approval to install four “mini-suites” on JetBlue Airways A321 aircraft as part of a 16-seat business class—a dramatic departure for an airline that since its February 2000 launch has operated as a single-class, low-cost carrier.

JetBlue Chief Commercial Officer Robin Hayes in March said the airline would start offering a “premium” product next year solely on its transcontinental flights. He said that product would be offered on a dedicated fleet of A321 aircraft, 13 of which are scheduled for delivery from the fourth quarter of this year through 2014.