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Thread: need your experience : airframe

  1. #1

    Join Date
    Mar 2018
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    Default need your experience : airframe

    Hi team,

    i would like to have your feedback about the following picture about 4130 airframe from an kitfox from 1996. could you confirm me what is the brown colors on the white paint please ?

    thanks for your help,

    richard
    Attached Images Attached Images

  2. #2
    Senior Member jmodguy's Avatar
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    Default Re: need your experience : airframe

    Hard to say. I would give it a good cleaning. It might be just dirty.
    Jeff
    KF 5
    340KF

  3. #3
    Senior Member PapuaPilot's Avatar
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    Nampa, Idaho
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    Default Re: need your experience : airframe

    It really looks like there could be corrosion under the paint. You should try poking the areas with a sharp pick to see of there is any weakness in the tubing. That method works really well for the spots that are underneath the fabric (so you don't have to pull the fabric away).

    There is also a chance that the area looks rusty because something that was rusty was resting on those spots. If so it should clean up.
    Phil Nelson
    A&P-IA, Maintenance Instructor
    KF 5 Outback, Cont. IO-240
    Flying since 2016

  4. #4

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    Default Re: need your experience : airframe

    Hi, thanks for your recommendation. i will try to made the test with a sharp pick. here attach a picture that i do after trying to clean the brown area. it seams to be part of the paint.

    regards,

    richard
    Attached Images Attached Images

  5. #5

    Join Date
    Jun 2014
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    Tumut NSW Australia
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    Default Re: need your experience : airframe

    Looks like surface corrosion under the paint. Not life threatening however time is coming to consider fabric removal, strip and repaint frame.

  6. #6
    Senior Member
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    Default Re: need your experience : airframe

    Caused from a epoxy varnish stain ?
    David
    SS7 Builder

  7. #7
    Senior Member ken nougaret's Avatar
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    Jan 2011
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    North Florida
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    778

    Default Re: need your experience : airframe

    I would see if maroon scotch bright takes off those brown spots.
    SS7 O-200 Whirlwind

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