I trained about 80 guys/gals for their ATP while instructing at ATP in Riverside. For most with the requisite 1500 hours, it is a very straightforward ride. Although you will find variances between every different examiner, the basics of the ride are the same. The oral primarily covers systems of the Seminole. The flight consists of engine failures on T/O roll, in the pattern and a couple at altitude, steep turns, stalls, engine shutdown/restart, approaches (2 engine ILS, 1 engine ILS, 2 engine non-precision, 1 engine non-precision), no flap landing. To get anything more specific, call 800 255-2877 and ask one of the flight instructors for details.