For everyone who says, “small is beautiful”, there are those who prefer to say “the bigger, the better”. When it comes to aero engines, both have their supporters but surely no-one could think that an engine whose diameter is greater than the diameter of a Boeing 737 is anything less than impressive.

With new scope negotiations due between now and 2022, OEMs are hopeful enough changes will enable their new crossover narrowbody jets to penetrate the North American market.

Engine manufacturers know that every cycle produced by their engines has value for themselves and the operators.