Hong Kong, Dec. 22 -- Emirates Airline president, Sir Tim Clark, has been a recent critic of airframe and engine manufacturers who have not delivered as promised on their products. True to form, he did not hold back when he discussed the carrier's big order for the new 777X.

In 2013 Emirates committed to purchase 150 of the yet to enter service type. Speaking at the Dubai Airshow last month, Sir Tim said Emirates wanted the new jet to be put through "hell on earth" in testing to ensure it was safe to fly and also met the airline's expectations.

The 777X will be the first new U.S. commercial passenger jet to be certified since the two 737MAX fatal accidents grounded the type last March. Subsequently it was revealed the U.S. Federal Aviatio...