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Thread: Garmin GMU-11

  1. #1
    Rotormech's Avatar
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    Default Garmin GMU-11

    Good morning all. I am currently contemplating installing the dual G5 setup and looking for some feedback on the installation location of the GMU-11 magnetometer. Any experiences is much appreciated.


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  2. #2
    Administrator Steve Pierce's Avatar
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    Default Re: Garmin GMU-11

    I have not installed one but worked on a couple of airplanes with the magnetometer installed in the wing.

  3. #3
    Zac Weidner's Avatar
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    Default Re: Garmin GMU-11

    I just installed one in my Twin Comanche on a single G5 HSI installation. I mounted it in the tail just forward of the tail surfaces. It is about 2.5 feet from a few different items, such as stormscope antenna, beacon&nav light wires, and trim cables. I didn't have any issues, though the LED Whelen beacon caused 85% of the allowable interference when it flashes, so it is pretty sensitive to unshielded wires nearby. I'm not sure if the steel structure will be an issue, but I'd probably try to mount yours in the right wing to be safe. Don't put it any closer than 2-3 feet to the nav light wire and I'd think you'd have no trouble.

  4. #4
    Rotormech's Avatar
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    Default Re: Garmin GMU-11

    Thank you for the responses gentlemen. Steve - on the ones you have seen in the wing, what sort of attach methods were used?


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  5. #5
    Stephen's Avatar
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    Default Re: Garmin GMU-11

    Does the G5 replace the whiskey compass?
    "You can only tie the record for flying low."

  6. #6
    Rotormech's Avatar
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    Default Re: Garmin GMU-11

    No it does not. It can replace an AI and/or DG basically.


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  7. #7
    Rotormech's Avatar
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    Default Re: Garmin GMU-11

    Primary reason I am looking at dual G5ís is the removal of the vacuum system. Of course the alternative is the RC Allen digital AI & DG which they say is totally self contained devices - no external sensors required.


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  8. #8
    Stephen's Avatar
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    Default Re: Garmin GMU-11

    I find an electric turn coordinator, AS, VSI, altimeter and good gps display work fine for instrument flying in emergency situations. I've practiced numerous approaches. No vacuum system required. Maybe, someday I'll get Dynon's new Skyview system and have everything on a TV.
    "You can only tie the record for flying low."

  9. #9
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    Default Re: Garmin GMU-11

    Quote Originally Posted by Stephen View Post
    I find an electric turn coordinator, AS, VSI, altimeter and good gps display work fine for instrument flying in emergency situations. I've practiced numerous approaches. No vacuum system required. Maybe, someday I'll get Dynon's new Skyview system and have everything on a TV.
    I feel the same, except delete turn coordinator and add trutrak ADI in my specific panel - also covers the VSI in the same instrument.

  10. #10
    Stephen's Avatar
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    Default Re: Garmin GMU-11

    Quote Originally Posted by CamTom12 View Post
    I feel the same, except delete turn coordinator and add trutrak ADI in my specific panel - also covers the VSI in the same instrument.
    I like it! But, can it be used in certified aircraft?
    Last edited by Stephen; 01-11-2019 at 12:14 AM.
    "You can only tie the record for flying low."

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