Friends, Today I test the auto survey function, but I found the plane didn’t fly the exact way which I plan. I don’t know how it happen.As shown below ,the plane didn’t hit the waypoint 1 ,but the plane maybe think it did hit the point 1 and fly to the 2. Meawhile on the way the plane still didn’t hit the line well! IT’S puzzling!

Hope your answer!

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The first question is, did you tune the plane? What is your L1 set to? What kind of plane is it? You really haven't given is much info to go off of.

thanks,iskess . my plane is like skywalker,the conventional configuration,and 2 months ago,I

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Your text got cut off, don't know what happened 2 month ago. 4
Screen shots of your flight plan doesn't help. Did you tune the aircraft? Let's see your parameters.

thanks,iskess . my plane is like skywalker,the conventional configuration,and 2 months ago,It works well and hit the line well.Full para in

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SORRY,see above please.

thanks,iskess . my plane is like skywalker,the conventional configuration,and 2 months ago,It works well and hit the line well.Full para"PLANE" in the attachment, thanks.Does this problem probablly cause by the bad gyro or compass?

Another question,when my x5(small x8) automaticlly takeoff,it didn't climb.I look into the logs,find the fight control only ask for 5 degree climb,not same as 20 degree i input.The full para"auto takeoff"also in the attachment.In addition,the throttle goes to max in auto-throttle mode,like loiter or RTL,even i set the cruise throttle to 45%.

Your NAVL1_PERIOD is set to 25. Change it to 12.

Read the tuning guide.

thanks,I read the tuning guide and change the para. Finally,it works!!Thanks iskess!!

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