Lessor CIT has ordered another 10 Airbus A350-900s, taking its overall commitment to the twinjet type to 15.
CIT had originally ordered five A350-800s and a pair of -900s but in mid-2011 it defected from the -800, converting its A350 backlog from seven aircraft into five - all the -900 variant.
Airbus has yet to clarify whether the repeat order from CIT will be included in its order total for 2012.
CIT Transportation Finance president Jeffrey Knittel says the deal will "further expand" its portfolio of medium-to-long haul aircraft.
"This new order underscores our commitment to delivering highly-efficient aircraft to our global customer base," he adds. In July 2012 the lessor ordered 10 A330-300s including a new higher-weight 240t variant.
That agreement took CIT's overall A330 backlog to 51 aircraft, including 34 -200s and 17 -300s.
Airbus also says CIT's A320-family orders total 187, although the airframer's latest order book data - to 30 November 2012 - puts the lessor's backlog at 182 aircraft, indicating that another five have since been added.
Rolls-Royce's Trent XWB powerplant is the sole engine available for the A350 family.