IHL / Gomer,
Thanks for the reference.
My point was from a pratical navigational point of view, rather than a regulatory on.
The FAP is indeed a position where the Final Approach Segment starts. This final approach segment is more for a regulatory standpoint, in so far as it provides a point for RVR minimums, company SOPs etc..etc..
For an ILS, it is not required in order to determine MAP as an marker beacon (as IHL was talking about) does for a LOC-only approach.
As in the TC requirement states, "This point should be coincidental with a designated FAF associated with the non-precision portion of the approach." I presume these points are conicidental to reduce confusion. Not sure.
cl12pv2s