Below is LOWW ILS 29 chart.
When shooting ILS 29 CAT 2 approach, we need to insert 97' as decision height in RADIO entry field of APPR panel in FMS, but, why don't we insert 100', which is DH, in stead of the RA 97' ? I mean what regulation (FAR, AIM, or ICAO something, whatever ) stands for that ? I've looked for it couples days but can't find it, and people just say "If there's RA, you insert RA, not DH, in the RADIO ". The RA xxx' only shows in CAT 2.
LOWW ILS 29 chart