It's not so much of uncharted territory as to unusual of being relatively lower than the RA would show. Colegues had the problem I described, but I've also noticed this before; during confined area T/O-LDG as the RA didn't catch any of the trees that we have flown over during departure.
Our pilots are aware of this "misleading" reading and we take some safety altitude with it.
I'll perform an EPC test today. We perform checks as per manual at every 100HRS for CAT A and we are some 50 HRS from that check, no wonder it isn't in the memory any more.
Thank you!
