The Wright Brothers flight-sim logging flight-sim
The download version runs as a stand alone program, ie it does not need a web browser or internet connection. It captures a log and can produce graphs of your flight.
If the autopilot is set on, the 'a' key turns it on and off. Try setting the autopilot reaction time up to 0.15sec to get a better idea of how to fly.
Currently Mac OS 9 only (runs in classic mode on Mac OS X)
5.5 Meg download