Airbus says that it might have to end production of the 850-seat, double-decker A380 superjumbo jet, having booked no new orders for the plane in two years.

The European aerospace group had expected another big order from Emirates in November, but the airline decided instead to buy 40 Boeing-787 aircraft, known as Dreamliners.

Airbus had expected a big order for the A-380 from Emirates. Source: Maarten Visser / CC BY-SA 2.0The economics of the A380 have proved difficult, with airlines having to fly every flight at full capacity to make a profit, according to the Guardian newspaper.

The A380 has a 2018 list price of $446 million. As of December, it had booked 317 orders for the plane from 18 airlines. Of those, 222 have been delivered.

The A380 made its first flight in April 2005 and entered commercial service in October 2007 with Singapore Airlines. The plane has an overall length of 239 feet and a wingspan of 262 feet. It has a range of 9,400 miles and a top speed of 630 mph.

The last order, for three jets by Japan’s ANA, dates from January 2016. The newspaper says that was the first after nearly three years since an order for 50 A380s by Emirates in 2013.

Airbus says it needs to build at least six a year for the program to remain viable. The company will deliver 12 aircraft in 2018, down from 27 in 2015.

Overall, Airbus said it booked a total 1,109 aircraft orders and 718 deliveries in 2017, outpacing Boeing’s 912 orders but falling short of its rival’s 763 deliveries.