Bombardier announces firm order by Nok Air for two Q400 NextGen aircraft Bombardier Aerospace announced that Thai carrier Nok Air has converted two of four previously acquired Q400 NextGen aircraft purchase rights to firm orders. The purchase rights were acquired under a contract announced on November 19, 2013 that also included two firm-ordered aircraft and two options, which were converted to firm orders on March 31. Nok Air is the launch customer for the new extra capacity seating option of the Q400 NextGen turboprop. This option will allow the aircraft to accommodate up to 86 passengers and offer an advantage of up to 7% fuel burn per seat, as well as an overall operating seat cost advantage of up to 17% compared to its closest turboprop competitor. Based on the list price for the Q400 NextGen airliner, the firm order is valued at approximately $66M.