Somebody out east was doing it last year...
It should be similar to a face-to-faece tech interview, except you probably won't be asked to draw the electrical system on a CE-410
Typical questions would be: FAR's, aircraft systems, aerodynamic theory, ESPECIALLY multi-engine theory...ALWAYS know that, IFR operations, charts, approach plates, STAR/DP's. If you're flying light GA airplanes, make SURE you know STARs/DP's even though you don't use them. Know the difference between a DP and an Obstacle DB.