On my last flight from Glasgow to London Heathrow I got a penalty (400 points!) for excess G-force (2.5g). However, nothing strange happened during the flight, and I landed very smoothly. Even 'FS passengers' didn't register excess G-force. I wonder if other people have the same experience and how this is possible.
The only thing I can imagine is a change of wind direction during the flight (at high altitude), causing a little 'swing' of the plane. However, if this caused the excess G-force it would have been recorded by 'FS Passengers'.
Furthermore I have a question about how this penalty influences my FAC. My FAC directly increased by 400, whereas I was thinking the FAC is an average. Each flight without penalty increases my FAC by about 30 or 40, this means I need a lot of flights to become positive again. Is it normal that penalty points are directly added to the FAC?