Airbus insists that the A319neo is still in demand from customers, but is waiting to see the effect on the aircraft from Airbus's inclusion of the Bombardier CSeries.
The A319neo has sold poorly, and the backlog has declined to just 30 aircraft. None has yet been delivered.
But Airbus chief executive Tom Enders indicated, during an event in Toulouse, that the company had obtained a new order for the type from China in the last few days.
He says the A319 is "still selling" because it has "particular features" which appeal to certain operators.
But he acknowledged that it was a "marginal" aircraft and "not a bestseller", and that the airframer was waiting to see whether A319 customers want to continue with the type or migrate to the CSeries.
"The CSeries happens to be a very competitive aircraft," says Enders, otherwise Airbus "wouldn't have been acquiring this programme".
"We shall see how these two aircraft behave [in terms of orders]," he adds.