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Nose up and down

Scheduled Pinned Locked Moved 146 Professional
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  • J Offline
    J Offline
    just737
    wrote last edited by
    #1

    The autopilot disconnects every time the nose trim are not stable and I don’t have touch that so why, the nose going automatically up very fast?

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    • J Offline
      J Offline
      just737
      wrote last edited by
      #2

      https://youtu.be/swFimTatIQ8

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      • J Offline
        J Offline
        just737
        wrote last edited by
        #3
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        • MarkM Online
          MarkM Online
          Mark
          JF Staff
          wrote last edited by
          #4

          It looks like for the majority of that video, the aircraft is below VFTO speed with Flap 0 and stalling.

          With the autopilot engaged, but with no vertical modes selected on MCP, the aircraft remains in basic PITCH mode and retains the initial pitch angle at the time of engagement. In PITCH mode, the pitch can be adjusted either via the PITCH control on the autopilot controller on the aft pedestal or via the autopilot SYNC function.

          In the video, there are instances where the autopilot is engaged with a pitch angle of 15 degrees, which is rather excessive for the aircraft when at high weights and with one engine at idle.

          When a stall is sensed, the aircraft's protections start kicking in, which include the autopilot disconnect, stick shaker and stick pusher, which can be seen in the video.

          If you're new to the 146, the aircraft is quite a quirky in how it operates compared to more modern aircraft, so we'd recommend having a run through of the tutorial flight from page 182 of the 146 Professional Operations Manual: https://support.justflight.com/en/support/solutions/articles/17000134438-146-professional-msfs-manuals

          We also have tutorial videos on our YouTube channel covering the tutorial flight: https://youtu.be/bFV_Zg86h-k?si=IL1hLqzLk3uBwdbs

          Mark - Just Flight

          Just Flight Development Assistant

          J 2 Replies Last reply
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          • MarkM Mark

            It looks like for the majority of that video, the aircraft is below VFTO speed with Flap 0 and stalling.

            With the autopilot engaged, but with no vertical modes selected on MCP, the aircraft remains in basic PITCH mode and retains the initial pitch angle at the time of engagement. In PITCH mode, the pitch can be adjusted either via the PITCH control on the autopilot controller on the aft pedestal or via the autopilot SYNC function.

            In the video, there are instances where the autopilot is engaged with a pitch angle of 15 degrees, which is rather excessive for the aircraft when at high weights and with one engine at idle.

            When a stall is sensed, the aircraft's protections start kicking in, which include the autopilot disconnect, stick shaker and stick pusher, which can be seen in the video.

            If you're new to the 146, the aircraft is quite a quirky in how it operates compared to more modern aircraft, so we'd recommend having a run through of the tutorial flight from page 182 of the 146 Professional Operations Manual: https://support.justflight.com/en/support/solutions/articles/17000134438-146-professional-msfs-manuals

            We also have tutorial videos on our YouTube channel covering the tutorial flight: https://youtu.be/bFV_Zg86h-k?si=IL1hLqzLk3uBwdbs

            Mark - Just Flight

            J Offline
            J Offline
            just737
            wrote last edited by
            #5

            @Mark hello i have looked at the manual but, I’m not finding exactly this problem, I have looked at the video also maybe you can make one video about this issue? I fly rj and the going very well πŸ‘ŒπŸ». But this is little different.

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            • MarkM Mark

              It looks like for the majority of that video, the aircraft is below VFTO speed with Flap 0 and stalling.

              With the autopilot engaged, but with no vertical modes selected on MCP, the aircraft remains in basic PITCH mode and retains the initial pitch angle at the time of engagement. In PITCH mode, the pitch can be adjusted either via the PITCH control on the autopilot controller on the aft pedestal or via the autopilot SYNC function.

              In the video, there are instances where the autopilot is engaged with a pitch angle of 15 degrees, which is rather excessive for the aircraft when at high weights and with one engine at idle.

              When a stall is sensed, the aircraft's protections start kicking in, which include the autopilot disconnect, stick shaker and stick pusher, which can be seen in the video.

              If you're new to the 146, the aircraft is quite a quirky in how it operates compared to more modern aircraft, so we'd recommend having a run through of the tutorial flight from page 182 of the 146 Professional Operations Manual: https://support.justflight.com/en/support/solutions/articles/17000134438-146-professional-msfs-manuals

              We also have tutorial videos on our YouTube channel covering the tutorial flight: https://youtu.be/bFV_Zg86h-k?si=IL1hLqzLk3uBwdbs

              Mark - Just Flight

              J Offline
              J Offline
              just737
              wrote last edited by
              #6
              This post is deleted!
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              • A Online
                A Online
                Avionic
                wrote last edited by
                #7

                Looks like you need to go back to basics and learn.
                On top of the manual JustFlight made tutorial videos as well, if you find that easier to follow.
                https://youtu.be/njIB2hABlSY

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