I have a pretty decent handle what the interview questions look like, and they change all the time. There's a few reasons for this, but one of the largest is that we just get bored hearing the same answers all day long. Be prepared to answer questions pertinent to 121 operations- most applicants already have some 121 experience, so the technical questions shouldn't be surprising. There are no curve balls. If you know how to do your current job, you have the technical knowledge to do ok in that portion. Of course, when I interviewed I re-read everything I had just to make sure I was sharp.

The scenarios and HR questions follow a similar format. They change all the time. Basic CRM skills and soliciting input and help from all available resources will get you through any scenario. HR questions tend to center on why you'd rather work for F9 than DAL/UAL/AA. My advice is to carefully consider if you really would prefer to work at F9, and then to practice explaining your reasons. If you could tell an interviewer why you want to want to be an F9'er without using the words "culture" or "Airbus" you'd stand out, in a positive way.

Good luck with your interview- hopefully you'll be online here soon!