(May 31): Qatar Airways Chief Executive Officer Akbar Al Baker lashed out at Airbus SE for the second time this month, warning his airline might stop taking deliveries from the planemaker this year over an unspecified “serious” issue.

“We have an issue with Airbus we need to settle, and if we are not able to settle that serious issue we have with them, we will refuse to take any aircraft from them,” he said in an interview with Bloomberg TV. Problems with Qatar Airways, Al Baker warned, will cause Airbus “a stress in the relationship with IAG, with LatAm, with other airlines in which we have a shareholding.”