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ILS-glide path TCH and RDH
28.10.2004
Submission:
I'd like to know about RDH (Reference Datum Height). There has been argument between my fellow and me. That is Y value in calculating TCH on the GP installation. In the FAAO 8260.3B chg18, this is no problem with TCH because we can disregard less than 1.5% of slope between runway centreline and GP with 0 longitudinal slope. However when applying ICAO ANNEX 10, I was wondering if one must really include the "Y" value (GP reflection plan) or not. Is there any exception, where I can calculate without using the Y value as in ANNEX 10?
J S Park
Seoul Korea
Answer or Commentary:
(I.W
I would like to put a forward to this comment and the replies, as it is not really part of a procedure design discussion and is quite technical. However it does raise some interesting points.)
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