Aside of Boeing aircraft, the Roll-Royce Trent 7000 and Trent XWB power the A330neo and A350XWB, respectively, while the Trent 900 is offered for the A380. As far as the Trent family of engines goes, Clark seems to have lost all confidence in the program: “There is no stability in the Rolls-Royce program at the moment as we see it,” he was quoted as saying by Skift.

“I’m not saying we don’t like the A330. I’m not saying we won’t like the 787-9 and -10. I’m not saying we don’t like the A350. These are hugely potent aircraft that eventually will get all their operations sorted out. They are outstanding designs. Unfortunately, they’re not being put together as well as they should be,” Clark told reporters in London.

With his stringent remarks, it seems the Emirates President is trying to win back the narrative. The outspoken airline chief said Emirates will honor its purchase commitments, but was keen to point out that contracts protect the airline from accepting delivery of aircraft that do not meet the required specifications. “When they don’t give me airplanes and engines that work, it’s over,” he said. “Now you produce what you say you produce. When we are ready, we’ll take it”.

The Emirates chief’s criticism of the aircraft and engine manufacturers came in a context of slowing global growth. Clark said he expects global travel demand to diminish as well, which will mean that airlines will have to be more selective toward new aircraft, as The National reports. 

Rumors in the media have surfaced about the possible cancellation of the Boeing 777X order by Emirates Airways. According to the plane maker's orders and deliveries report, 150 orders for the 777X jet were placed by Emirates on July 8, 2014, and are still waiting for delivery. Could Emirates’ eyes now turn to the Airbus A350XWB?