Something has changed regarding the angle of flight in FS9. It doesn't matter which aircraft I use or the wind direction. Whether I'm taking off, landing or flying I have to aim the aircraft at a 5-10 degree angle to the left in order to fly or steer straight. I don't know if there is something I can change in a configuration file or if I need to reinstall FS9.Jerry

Are you using a joystick or yoke? If so, have you tried a recalibration?

Are you using a joystick or yoke? If so, have you tried a recalibration?

I'm using a CH Flightsim USB yoke and rudder pedals. I'm actually calibrating the controls thru FSUIPC rather than FS9 so I wonder if there is a problem there. I'll try calibrating thru FS9 and see if it makes a difference. It doesn't really seem like a calibration problem though. Its like something changed the line from the nose to the tail of the plane and threw it off a few degrees because I have to aim a few degrees to the left to fly straight even in a no wind situation.

Something has changed regarding the angle of flight in FS9. It doesn't matter which aircraft I use or the wind direction. Whether I'm taking off, landing or flying I have to aim the aircraft at a 5-10 degree angle to the left in order to fly or steer straight. I don't know if there is something I can change in a configuration file or if I need to reinstall FS9.Jerry

Hi Jerry, I'll bet that your aileron on rudder trim is off. This even affect planes which do noy have aileron/rudder trim adjustments listed. To fix it, load a plane which has those features, make your adjustments, then save a new default flight.The turn and bank indicator can help you get those adjustments just right. Use Ctrl+Numpad 4 and 6 to trim the ailerons and Ctrl+Numpad 0 and Enter for the rudder trim.R-

Hello,OP wrote:

It doesn't matter which aircraft I use

Why ...

This even affect planes which do noy have aileron/rudder trim adjustments listed

Regards.Gus.

Hello,OP wrote: Why ... Regards.Gus.

If you fly a plane with aileron and/or rudder trim controls on the instrument panel, then adjust one or both of those trim controls (on purpose or accidenally), then save the flight with the "Save as Default" box checked, then those trim adjustments are saved in the *.flt file. When you start FS for the next session the trim adjustments are retrieved. Then, if you change to a plane without aileron/rudder trim adjustments on the panel, there is no way to readjust the trims.The only way that I have found to fix the problem is (as stated) select a plane with trim controls visible. It is helpful if the plane has a Turn and Bank Indicator (AKA Turn Coordinator). It seems that I used the C208. My method is:o Choose a plane with aileron and rudder trim adjustments on the panel.o Get airborne and use Autopilot Heading Hold to fly a course.(At this point, check the T&B indicator; the ball and needle should be centered. If not, then suspect a trim problem.)o Disable Heading Hold.If your plane continues to fly straight, look for another problem it is not misadjusted trims. If the plane turns one way or the other, then you may have a trim problem. If you have a trim problem, then:o Use Ctrl+Numpad 4/6 (aileron trim) and Ctrl+Numpad 0/Enter (rudder trim) while monitoring the T&B indactor.o Try one, then the other in small increments until the plane flys straight wth the ball and needle centered.o Save the flight as the default flight.It can be difficult to determine which trim is off. They affect each other and one can be used to offset the effect of the other. I usually start with the aileron trim and count the number of clicks. If I get the plane flying straight but the ball or needle is not centered, then I set aileron trim back to its original postion (by counting clicks in the other direction) and repeat the process of the rudder trim.I hope that this is helpful.R-PS -- I just thought of another possible problem for the OP. Make sure that your fuel load is evenly distributed in both tanks and that fuel is being used from both tanks. R-

Hello,

If you fly a plane with aileron and/or rudder trim controls on the instrument panel, then adjust one or both of those trim controls (on purpose or accidenally), then save the flight with the "Save as Default" box checked, then those trim adjustments are saved in the *.flt file. When you start FS for the next session the trim adjustments are retrieved. Then, if you change to a plane without aileron/rudder trim adjustments on the panel, there is no way to readjust the trims.The only way that I have found to fix the problem is (as stated) select a plane with trim controls visible. It is helpful if the plane has a Turn and Bank Indicator (AKA Turn Coordinator). It seems that I used the C208. My method is:o Choose a plane with aileron and rudder trim adjustments on the panel.o Get airborne and use Autopilot Heading Hold to fly a course.(At this point, check the T&B indicator; the ball and needle should be centered. If not, then suspect a trim problem.)o Disable Heading Hold.If your plane continues to fly straight, look for another problem it is not misadjusted trims. If the plane turns one way or the other, then you may have a trim problem. If you have a trim problem, then:o Use Ctrl+Numpad 4/6 (aileron trim) and Ctrl+Numpad 0/Enter (rudder trim) while monitoring the T&B indactor.o Try one, then the other in small increments until the plane flys straight wth the ball and needle centered.o Save the flight as the default flight.It can be difficult to determine which trim is off. They affect each other and one can be used to offset the effect of the other. I usually start with the aileron trim and count the number of clicks. If I get the plane flying straight but the ball or needle is not centered, then I set aileron trim back to its original postion (by counting clicks in the other direction) and repeat the process of the rudder trim.I hope that this is helpful.R-PS -- I just thought of another possible problem for the OP. Make sure that your fuel load is evenly distributed in both tanks and that fuel is being used from both tanks. R-

All this explaination is fine ...Nevertheless it's not to apply if your flightsim is neat and well installed and if you have a joystick (yoke) well calibrated.The best is to find the cause(s) of the problems ...Normally deviation(s) of flight path can come cause gyroscopic effect, wind or couple effect ..when you use the default(s) plane(s) from FS2004.You can disable those effects in the FS2004 realism and weather settings of the sim.If those effects disabled you still suffer deviations of flight path .. this can come from the joystick (yoke) not well calibrated or defficient , the keyboard defficient... or also from a weather third party addon.Of course .. saving a flight like default flight with a non default aircraft and with trim adjustements and some fuel settings can give problems when using a other plane ... but who will make such thing ? :)The advice is (and I will suggest the OP to make this) to use a default plane (like C172) with no adjustments on a default airport for saving a default flight.Regards.Gus.