There is a lot of anecdotal evidence about this issue. How about some hard data? We spent the past month building delivery models for Airbus, Boeing, and Embraer’s current in-service programs, and this is what we found. From now on, we will be updating these models daily.
As you go through the charts, note that they are not uniform. The process is still a work in progress, and the amount of data for each program varies. We hope to standardize this and potentially merge all these separate models into one, but that is still considerable work.