Originally Posted by
ferris
JD
Yakity's point was referring to the mode C readout ie. what is displayed to the radar controller (who has the RDP between him and the transponder output).
ferris, I think we may be at cross-purposes - I was referring to his reference to TCAS, when he said:
Originally Posted by
yakkity yak
Also, remember that there could be other aircraft in the vicinity cruising at altitudes and this could affect the integrity of TCAS if your mode C is using 1013 instead of QNH.
As I said, Mode C in the aircraft never uses QNH.
JD
