Originally Posted by DC-8
So is it wrong if for example I say the LEMAC is xxx inches from the datum?
Not really, since what you're saying in shorthand is really that the zero point of the mean aerodynamic chord (which does indeed tend to get called the "leading edge") is at a certain position. What's important is that its a geometric reference point, not a "real" leading edge.
As I said, my point was to some extent being pedantic. Its the engineer in me
Oh, and if I were conversing in anything but my native tongue (English, of course) I'd appear to be a mentally challenged 8 year old, so no apology needed.