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GTN750 / Century IV Bug

Scheduled Pinned Locked Moved Piston & Turbine Dukes
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  • S Offline
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    SomeoneCalledRay
    wrote on last edited by
    #1

    I've posted twice today about different things, so my apologies to you guys for that, haha.

    I was setting up the Piston Duke just now on VATSIM for an IFR flight (EGGP --> EGKK) and had everything all set up correctly and as I normally would in the PMS50 (free) GTN750/GTN650 combo config.

    This all worked fine, until I tried to engage NAV mode on the Century IV, and it just wouldn't. No response, no arming, nothing.

    I've uploaded the video to Streamable here.

    Any ideas? This happened a second time when I tried with the turbine duke and just the GTN650.

    N RandolfR 2 Replies Last reply
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  • N Offline
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    Napalm520
    replied to SomeoneCalledRay on last edited by
    #2

    @SomeoneCalledRay

    Have you switched on the pitch trim power? The autopilot will not engage until this is switched on.

    S 1 Reply Last reply
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    SomeoneCalledRay
    wrote on last edited by
    #3
    This post is deleted!
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  • RandolfR Offline
    RandolfR Offline
    Randolf
    replied to SomeoneCalledRay on last edited by
    #4

    @SomeoneCalledRay From the video, I see the autopilot master switch is off - the leftmost switch on the AP panel. You probably need to turn it on to function.

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    SomeoneCalledRay
    replied to Napalm520 on last edited by
    #5

    @Napalm520 Watch the video I sent. AP works fine, no mode change though, even the GA button on the throttles does nothing.

    RandolfR 1 Reply Last reply
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  • RandolfR Offline
    RandolfR Offline
    Randolf
    replied to SomeoneCalledRay on last edited by
    #6

    @SomeoneCalledRay not sure how it can work when it's clearly OFF :)
    Probably that's the bug then, it being off and working.

    3e3836cf-86dd-4a43-b93c-e32ae95ce72b-image.png

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  • RandolfR Offline
    RandolfR Offline
    Randolf
    wrote on last edited by
    #7

    The screenshot is from your video posted above.

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  • S Offline
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    SomeoneCalledRay
    replied to Randolf on last edited by
    #8

    @Randolf Yeah I tried it in flight with AP on, no mode change whatsoever.

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  • Nicotine70N Offline
    Nicotine70N Offline
    Nicotine70
    wrote on last edited by
    #9

    that remind me a point adressed in the FAQ, are you interfering with a specific control panel ?

    image.png

    imo it really sound like a binding issue

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    SomeoneCalledRay
    replied to Nicotine70 on last edited by
    #10

    @Nicotine70 I've sorted the issue now.

    The fix? Absolutely nothing, it randomly decided to work for no apparent reason at all. It's definitely not a binding issue as I have nothing bound to any AP controls (control surfaces, trim and power management only).

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