Ali al-Rais, executive vice-president of the airline, said no new delivery deadline has been set yet.

"They already know they have been at fault," he told reporters in Dubai. "They know the stand clause will kick in."

Qatar Airways currently serves 83 destinations and has a fleet of more than 60 planes. It has about 200 planes on order.

(Reporting by John Irish; writing by Amran Abocar; editing by Inal Ersan)