The interview usually consists of two individual interviews, both one-on-one. They both were very "generic" in nature, asking me about my past work and educational experience. Then both gravitated towards my interest in aviation. I think in both cases they were looking at overall communication ability. In my second interview some technical questoins were asked, asking some FAR related topics. Minimum altitudes etc over congested areas. Some odd senarios related to that situation, I had to think a little outside the box.
The presentation topic will be given to you 24 hours in advance and you will do a formal presentation on a private or commercial manuever. You are really expected to know the maneuver inside and out, you may use the dry-erase board and a model aircraft. No overheads, videos etc....The presentation MUST be 15 minutes in length, this is very important. Come up way short or long and you're looking for trouble. Then following the presentation the panel (consisting of 4-5 check airman/chief pilot/academic instructor) will ask questions and try to shake you...They are tricky, they know more than you, they'll pick you apart if you try to act like you know more then they do. Responses should be brief, and to the point. Don't offer extra information as it becomes "fair game." Act like a big shot and they'll call you on it. So...come well prepared, be brief in reponses, and 15 minutes.
The Frasca flight is much like an IFR checkout. If you pass the presentation then you'll be given access to the Frasca at odd times. Go and practice, it'll have been a while since you've been in the box (frasca) flying instruments and multi engine. SO........I had a very basic flight including an NDB approach, an engine failure- procedure turn inbound on an ILS and I held as published off of the ILS after my engine was given back. My feeling was that they are not looking for perfection but if you're 300' off on altitude, feathering the wrong engine and getting lost in a hold well...that's not acceptable.
Are check ride grades important? The CFI check ride will play a role in the interview process. Will they care about how you did on your pre-solo check? No...But if you can go in showing a history of outstanding check rides, even better. But the CFI ride counts, the others don't matter really unless you bring them up!!