Little more to it then meets the eye;
- Instructor did not have a lot of time on type to begin with like 100hrs.
- This was the third Seneca and different from the other two.
- High student load so a third airplane was brought in from Belgium
- Different avionics, different autopilot and no autopilot disconnect on the RH side (instructor side)
- Student flying at the time had no previous experience on this aircraft which did not help in identifying a problem.
- At least half a dozen trim occurances that were not written up because of a bit of a lacksadaisy safety attitude.
- The CFI in question had indicated to his girlfriend taht he wanted to quite and go back to University because of unspecified safety isssues
- The airplane was flown overweight and out of CG on the flight in question.