I have all variants of the 737NG on my system.Generally the aircraft behaves properly in every way and I am most happy with it. However, and there always seams to be an however when someone is happy and starts a post, occasionally I have a problem with the throttle advance.This problem occurs when I have shutdown and unloaded FS. The next time I load and go from 'cold and dark' to taxiing as I advance the throttle levers N1 rises to in a yoyo fashion from 20.* to about 24 to 26 and a horn sounds intermittently. I have Flaps set for takeoff but no matter how far I advance the throttle it never gets above 24 to 26. If I shut down FS and reload everything works OK.The hard part here is that it doesn't happen evry single time but is occurring enough to be annoying.Any suggestions?Andy b

Hi Andy:You'll have to include the type of controller you're using I believe. Also, include a little background info like...- does/has this ever happen with other sims/games?- have you tried calibrating the controller lately... using utilities for your controller, within FS, etc.- what FS version are you using- are you using the newest drivers for your system components- what other programs are you running, if any, while running FS... stuff like that.Murray

Hi Andy,other issues may include: have you made any modifications to the panel.cfg?, the location of the cold and dark startup, is it addon scenery? etcP.s. I have had similar experiences with all of the above. I have since cleared my saved flights, reinstalled the NG and have no problems.

I would recalibrate your HOTAS and then if necessary adjust the Null Zone.Waldo

Hi all, whilst were on topic...i have never been sure...what is a null zone?THanks, Ross

>Hi all, >>whilst were on topic...i have never been sure...>>>what is a null zone?>>THanks, >>RossHi Ross!A null zone (or dead zone) is an area on either side of the center point, of an axis. A controller has a Y axis (pitch up/down), an X axis (bank left/right), a Z axis (yaw left/right), etc.The "null zone" can be increased or decreased so that a given axis will not change until the controller is moved beyond the point that has been set.For example, if you find your controller reacts too abruptly to say a banking movement (left or right), you can increase the null zone for the X axis. You will then have to move the controller further, before it produces a resulting movement... in this case, a bank.For the most part, "you" will have to decide what is the correct setting for a null zone, IMO, based on your controller, your system, and your personal preference.Hope this helps!Murray