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Thread: Bendix King KCS 55A HSI PROBLEM

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  1. #1

    Join Date
    Oct 2020
    Posts
    2

    Exclamation Bendix King KCS 55A HSI PROBLEM

    Hi everyone!

    Maybe I can get some help here.

    On my Lancair 360 I have a Bendix King KCS 55A HSI and I'm having some problems whith it. Yes, I know... Who this days still use this old technology so prone to fail? Right now I cannot spend too much money on the panel, and I don't fly IFR, so I'm trying to solve this with no rush.

    As you can see on the video I post here, the HDG flag is out and the compass card is dead. And if I rotate the HDG bug, all the card rotates with it. If I try to unslave and rotate freely, also nothing happens.

    On the KG 102A remote unit, I can hear the gyro spinning. I know this unit needs an overhaul after several years, but normaly, for what I read, the symptons for a repair are errors on the compass card or lag reaching the heading. On this case, the "gyro" / heading doesn't work at all.


    Do you have thoughts on this?

    Thank you all in advance

    David

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  2. #2

    Join Date
    Feb 2012
    Location
    Barrington, IL
    Posts
    121
    Send it to aircraft quality instrument repair. I've used this instrument shop several times over the years with fast turn around at fair prices.

    http://flyaqi.com/home.htm

  3. #3

    Join Date
    Oct 2020
    Posts
    2
    Hi Kurt,

    Thanks for your answer . Will get in touch with them.

    David

  4. #4
    Mayhemxpc's Avatar
    Join Date
    Apr 2012
    Location
    Manassas, Virginia
    Posts
    800
    And don't apologize about using steam gauges! Like most things, they wear and need servicing from time to time.
    Chris Mayer
    N424AF
    www.o2cricket.com

  5. #5

    Join Date
    Feb 2014
    Posts
    7
    Bob Bramble at Aerolab aviation is another good resource. Reasonable and his work is excellent. Lee

    https://www.aerolabaviation.com/AEROLAB%20AVIATION%20CONTACT%20US.html

  6. #6
    FlyingRon's Avatar
    Join Date
    Aug 2011
    Location
    NC26 (Catawba, NC)
    Posts
    2,627
    I may have missed it, but have you tried putting it in free gyro mode (i.e., turn off the slaving). My KCS-55 periodically goes wonky and fails to bootup the magnetic heading. The heading flag stays flagged and the like.

  7. #7

    Join Date
    Dec 2019
    Posts
    4
    The cost to repair and overhaul this unit in my opinion is not worth the effort. Invest in a Garmin GI275 with ADHARS. You will be much happier in the long run. https://www.kitplanes.com/product-re...n-gi-275-efis/

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