I think it's fair to say you can't really study for the HAL interview. The personality tests are quite straight forward and you just want to be honest. The mathematical IQ test is just that, an IQ test and you can't study for those. It's timed and you just do your best.

The rest of it is some kind of panel or interpersonal type exercise where you just have to be yourself and be honest. There was no specific pilot technical stuff. The sim is basically an exercise in CRM and basic instrument scan.

My suggestion is go, be yourself and have fun. This is a great company with a great future and you don't have to be fake or kiss up to them, just be honest and let your personally come out.