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Deadman

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  1. The colors for a USAF aircraft would be Federal Standard 595 Colors  FS 37925 Flat Insignia White, 33538 Flat Yellow, 36231 Dark Gull Grey , 37038 Flat Black. the Zinc Chromate primer does not have an FS number as far as I know I found this on another form with Google

     

    The "recipe" of zinc chromate was spelled out in AN-TT-P-656.  The natural color of zinc chromate primer is yellow (for lack of the exact term for the color).  Jennings has already said that the coloration (untinted zinc chromate) was based on its chemical makeup, not because pigmentation was added.  What's being discussed is the green color of tinted zinc chromate versus the MM color "zinc chromate green".  I've already stated that the color of tinted zinc chromate varied with each manufacturer.

     

    Per Boeing B-17F E&R manual (T.O. 01-20EF-02 page 439) and B-17G E&R Manual (T.O. 01-20EG-02, page 422)

     

    "Wherever carbon black tinted primer is specified, it shall consist of or be equivalent to, 8 ounces of carbon black tinting paste (Fuller's No. 790 or equivalent) per gallon of zinc chromate primer."  Carbon black tinted primer = interior green, Boeing style.

     

    Per Northrop P-61 E&R Manual:

     

    "All exposed interior surfaces of the gunner's, pilot's and radio operator's compartments shall be finished with Northrop Cockpit Green (12 oz. of black camouflage enamel AAF 14109 to one gallon of zinc chromate primer Spec.No. AN-TT-P-656)".  Interior green, Northrop style.

     

    P-51D E&R manual (AN 01-60JE-2, pages 403-406):

     

    Various structural members:  "zinc chromate primer per AN-TT-P-656". 

    "Interior green "spec no. E-7 flat black to be used."  Interior green, North American style.

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