LONDON — Leasing firm CIT Aerospace placed an order for twenty Airbus aircraft on Tuesday in Farnborough, in a deal worth $4.7 billion.

The order is split between 15 of Airbus’ freshly launched A330neo, and 5 A321ceo jets. Deliveries will begin in 2017, continuing on through 2020.

Which A330neo version the company would order was not entirely clear. Initially CIT president Jeff Knittel said his firm was ordering -800s, positioning CIT to be the launch customer, then changed to -900s after noting his release (which said -900s).

CIT currently owns and operates several A330s, which according to Knittel provides a natural progression on to the A330neo.

As for placing orders for the A321ceo, rather than the neo, Knittel says “the current demand for the A321ceo is excellent,” adding that CIT could “migrate the customer, if necessary, to the A321neo” down the road. The firm currently maintains orders for fifty A320neo family jets, placed in June 2011.