UPDATE 1-AIRSHOW-CIT Leasing orders 10 Airbus A330 planes

FARNBOROUGH, England, July 11 (Reuters) - CIT Leasing has placed a firm order for 10 Airbus A330 passenger jets, worth around $2.3 billion at list prices, the two firms said at the Farnborough Airshow on Wednesday.

The order comprises a previously unannounced order for five planes agreed earlier this year and a new air show order of five, Jeff Knittel, head of CIT's transportation financing unit, said.

The deal includes the first commitment to the new longer-range version of the A330 announced by Airbus on Monday, the European planemaker said.

The longer-range engine comes as an option on the planes. The deal means CIT now has 51 A330s on order.