Hmmmmm... I would have thought this was common knowledge for anyone who flies a C172S in the kg world?
I know I was informed of it when I started flying the 172S, and was told it was something "everybody knows and nobody fixes". The POH's I have seen for the 172S have had a pencilled note not to use the kg scale.
But it is indeed worrying if there are people who still aren't told, so spreading the word is probably a good idea.
