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PMDG NGXu 737 banking left during cruise

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    PMDG NGXu 737 banking left during cruise

    Every single time i do an ETOPS flight in the NGXu (no matter what plane) it always seems to sharply yaw right then lean slightly to the left. This is very annoying and unrealistic. This is the third time ive had this happen. Hopefully i can find out if its something on my side or on the NGXu's side.


    Noah V. Southwest Virtual Airlines Executive Captain

    #2
    Dear Noah, you need to sign your posts with your full real name as per the forum rules.

    Comment


      #3
      okay, very sorry about that.







      Noah Vanevski

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        #4
        Originally posted by noahvan123 View Post
        Every single time i do an ETOPS flight in the NGXu (no matter what plane) it always seems to sharply yaw right then lean slightly to the left. This is very annoying and unrealistic. This is the third time ive had this happen. Hopefully i can find out if its something on my side or on the NGXu's side.


        Noah V. Southwest Virtual Airlines Executive Captain
        A slip attitude comes either from rudder deflection / rudder trim or from assymetrical thrust. Check your engine instruments, the flight controls and the rudder trim. It could be that you have accidentially assigned a control to the trim or that your rudder controls are kot calibrated.
        Ryzen 9 5900X, RX 6900XT, 32GB DDR4 RAM @3600MHz, 4k
        Marc Eland
        GFO Beta

        Comment


          #5
          Noah how big is this Curving left? it could always be the CMOS battery. Everytime my CMOS battery goes out that happens to me. Its also in the knowledge base.

          The easiest way you can tell you CMOS battery is dead is when the OS doesn't update from Windows.time.com and the date stops switching
          Alex Kulak
          PMDG Studier and flyer

          Comment


            #6
            Are you using time acceleration by any chance? I've seen this happen at higher simulation rates already in the NGXu.

            Comment


              #7
              It also happens when you use Rex skyforce.


              Kind regards

              Mattias Nordgren
              https://www.klm-va.nl/

              Comment


                #8
                Guys, hold on please..

                CMOS —> LNAV won‘t follow the route, the plane goes into a wide turn.

                Time acceleration —> to my knowledge it affects the ability to follow the programmed course too and leaves the line to any side.

                what Noah describes however is that the plane yaws to the left and then banks to the right to stay on course. That sounds a lot like a hardware configuration problem or a set rudder trim to me.


                I believe to remember that there was a software problem with the trim but I don‘t know anymore when, what and if yes, has it been fixed?
                Ryzen 9 5900X, RX 6900XT, 32GB DDR4 RAM @3600MHz, 4k
                Marc Eland
                GFO Beta

                Comment


                  #9
                  i was not using any time acceleration during the flight. I was nit using REX either. the plane was banking 2-5 degrees to the left.

                  noah vanevski

                  Comment


                    #10
                    Originally posted by noahvan123 View Post
                    i was not using any time acceleration during the flight. I was nit using REX either. the plane was banking 2-5 degrees to the left.

                    noah vanevski
                    Yeah that‘s a typical bank for assymetrical thrust or applied rudder/rudder trim. Did you check that?
                    Ryzen 9 5900X, RX 6900XT, 32GB DDR4 RAM @3600MHz, 4k
                    Marc Eland
                    GFO Beta

                    Comment


                      #11
                      my thrust was the same amount in both engines. i did nit check the rudder trim yet, i will soon.

                      noah vanevski

                      Comment


                      • DDowns
                        DDowns commented
                        Editing a comment
                        I've seen aileron trim get corrupted in panel states before. Of course you can rule this out by doing a control check before flying as all pilots must do.

                      #12
                      i fly only SWA and they do not have the control check display

                      noah vanevski

                      Comment


                      • mats0916
                        mats0916 commented
                        Editing a comment
                        Seriously? So instead of trying to find the fault and activate the controls display for trouble shooting you stick with your own SOP?

                      #13
                      Sounds to me like an LNAV issue with the NGXu. In which case we know PMDG is working on upgrading said system. Another issue this could be is with your controller. Do you use a HOTAS or flight stick? Sometimes if they fall out of calibration they can cause the LNAV system to screw up mid-flight.
                      Zac Aghdaei👨‍✈️
                      PMDG Captain since 2015

                      Comment


                        #14
                        Why should an LNAV issue yaw to one side and bank to the other? That‘s a simple slip. The reason might be a controller problem as well as a problem with the aircraft, operational or failure. But a slip is a slip: yaw to one side, bank to the other side to keep track. Assymetrical thrust, rudder trim, rudder pedals…

                        it always seems to sharply yaw right then lean slightly to the left.
                        Last edited by Ephedrin; 14Jul2021, 18:47.
                        Ryzen 9 5900X, RX 6900XT, 32GB DDR4 RAM @3600MHz, 4k
                        Marc Eland
                        GFO Beta

                        Comment


                        • CaptainAghdaei
                          CaptainAghdaei commented
                          Editing a comment
                          Sorry, didn’t see the yaw and bank distinction. In that case I agree that it is most probably a controller problem (I had a similar issue with my HOTAS). If it’s an operational issue with the plane then I don’t have much advice lol. All I did to fix my HOTAS was the basic; update the drivers and recalibrate.

                        #15
                        When on the ground prior to your flight in the fmc check ground maintenance and reset hydraulics.
                        Larry London

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                          Larry London

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