Hi Mark

Once again, tried the same CS FSX tutorial flight, from EGLL- LEMD and tried what you suggested for the SimuFly CIVA INS but instead, tried to substitute for the default INS that comes with this aircraft, and it did not follow anything that looked like the flightplan. I had to keep changing the HDG over and over to manually follow the flightplan, as I had the aircraft going off on a track of its own mind.

In the end I just gave up. Much as I do like this aircraft, I am afraid its INS navigation system is driving me up the wall and wasting my precious time.

Or, I may go your SimuFly route. To that extent, is it just a matter of running the .exe and then copy/pasting your aircraft.cfg as above?