Hi word-wizards and language-clerics

I am a non-native English speaker, and are genuinely unsure about the word "Erroneous". I feel like I can use it as follows:

"The Erroneous mechanical part was not deemed defect, since the recorded error identified on the part was purely cosmetic"

I am trying to say that there has been detected and recorded an error on a mechanical part (hence identifying it as the erroneous part, in contrast to other parts of the same kind with no identified errors/flaws/imperfections), but it is not so bad that it is an actual defect, since the part work. So it is not a wrong part either.

Does it make sense? And would you use a different word?

Thanks in advance!

The other day a coworker asked me how to spell ‘erroneous’. I instantly said ‘e-r-r-o-n-e-o-u-s’ because I’m a bit of a spelling nut. Anyway, just to confirm, I Google searched the word. Weirdly, it asked me, “Did you mean erroneus?” which really surprised me, because I’m usually right about spellings and I remember thinking it didn’t fit the usual spelling convention of such words ending with ‘ous’. Even the results ALL showed ‘erroneus’.

Anyway, a couple of days later, I decided to use the word in an email, and since I had learned of the new spelling, it felt wrong, but naturally I typed ‘erroneus’. It came up as misspelled. What!? So I Googled it AGAIN and sure enough, it said it was wrong and every result now showed ‘erroneous’.

Up until now I’ve written these occurrences off as people misremembering, but here it was, only a few days later, right before my eyes. Like I momentarily slipped into another reality. I simply do not have a rational explanation for this. Any thoughts?