Recently heard that as per some ICAO DOC, a 2.5nm LEVEL flight segment is MANDATORY on the localizer prior to intercepting the glidepath.
So far we'd try and arrange our descent to be AT glideslope intercept altitude AT the point of glideslose capture- prefrebably extending flap and gear so that there is minimum thrust lever change. Also noticed that the FMC builds a 2.5nm level flight segment between the G/S anf CF(localizer intercept point).
Any views/location of the relevant ICAO Doc would be much appreciated.
Thanks
