New engine delivery projections from the Aviation Week Intelligence Network 2021 Commercial Fleet & MRO Forecast reveals that an average of over 2,500 turbofan engines per year will be needed for new commercial single-aisle aircraft between 2021 and 2030. 

The vast majority of the deliveries will be for narrowbody aircraft—a share of 92% for the period, while the balance of 8% will be for regional jets.