Hiro wrote:

Ok,,, so it' been known to pilots that ATIS reports are based off of
magnetic heading: AWOS, ASOS, FB WINDS (Winds Aloft) are based on true
heading. The question is, where in the FAA publication does it say
that? I looked through FAA's PHAK, AIM, and AC00-45F, but none of
them indicated anything about the heading.


Wind broadcast on ATIS, AWOS, and ASOS is magnetic.