Airbus admits that Dubai Aerospace Enterprise appears likely to struggle to accept all of the aircraft it ordered at the Farnborough Air Show two years ago.
The Middle Eastern operation signed large aircraft orders with both main airframers at the 2008 show, including a deal for 30 Airbus A350s and 70 A320s.
But speaking at the Farnborough Air Show 2010, Airbus chief operating officer for customers John Leahy said that it was "no secret" that DAE was "in financial difficulty".
He adds that the company "may not be able to take all their aircraft, or maybe not on time".
Boeing's order backlog shows DAE with 118 aircraft including 70 737s, 15 each of the 747-8F and 787, and a batch of 777s.