Hogan Assessments is a vendor or a service provider. Their products are marketed to United, and other corporate clients, as a tool to help the client attract certain personality traits and avoid other personally traits, depending on the client's specific requests and parameters. Therefore, there is no such thing as "results that it [the assessment] simply spits out". The results are specifically tailored to the requirements of each client.

Do we know what United's specific parameters are? No. But some online research on pilot personality profiles, exploring a few researcher / thesis papers on personality profile assessments, and browsing around the Hogan Assessments website can get you pretty close.

And yes, it's is somewhat of a moving target, as Hogan (the vendor) ensures their customers (United) that their products are continually supported by having the ability to adjust the assessment tools as needed over time to suit the changing demands of their customers as well as to hone the validity of the results of the assessment tools.

Don't take my word for it. All this info is available on the Hogan Assessment website and blog.

Do I have a link? No. I read through dozens upon dozens of links. But before I got the opportunity to interview, I had a lot of time to prepare, research, and be ready for the opportunity when it presented itself.

That's the method that worked for me. YMMV.