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AS9100 Aluminium Anodising - "Special Processes"

Q. Is anyone familiar with EATON Aerospace's Anodising specification TS-112 and its internally referenced TS-130 and TS-131?

We anodise to AMS 03-25 and MIL-PRF-8625F(2) Type II (as best we can, as these specifications do not mention any processes for "Selectively Dyeing" Aluminium sheet via screen print processes.

After a recent "Special Process" audit they have raised NC's against our Coating testing methods by use of Eddy Current Meter, as this is not as described in their TS-131 specification.

I am questioning the validity of the testing requirements of TS-131 (Coating Weight Determination) as the document is not only 20 years old, it does not appear to have gone through their own Document Control Process, as the document is not Signed or dated for approval or issue as a requirement of AS9100.

Any thoughts on this?

T malby
SP Quality Rep. - UK
March 11, 2025

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