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Thread: Coloration of fuselage during aircraft construction ?

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    Senior Member Speedbird1's Avatar
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    Coloration of fuselage during aircraft construction ?

    I was always curious about why a bare metal aircraft fuselage during construction appears as a light green or blue color. If the fuselage skin is usually aluminum, wouldn't the skin appear a shiny silver rather than green or blue? Is this due to a chemical reaction of some sort? Boeing will not discuss their manufacturing process with the public.

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    It's primer, usually some version of zinc chromate.

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    Senior Member Speedbird1's Avatar
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    Thanks for the info. Is this related to the process called "Pickling" often used on metallic surfaces to strengthen them?

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    Senior Member Ari707's Avatar
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    usual the only part that is painted during construction is the rudder, so it can be balanced when it is installed.
    Overheard on JFK TOWER - S Turns are fine, U-Turns are bad....

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