deadly threat radar brightness control in airbus?
every pilot admits it has happened to him or to her that this knob was fully closed when switching on radar for wx watch, resulting in a "happy situation" with no visible echoes.
some of the aircraft still give a minimal brightness in full dark position, alerting that something might be wrong, while others really give full dark.
suggest to limit minimum brightness to about 50%.
if this is not possible suggest to disable brightness control in full bright.
for non airbus pilots having ONE switch for radar picture:
on airbus radar picture is shown in nav display.
nav display has a brightness control.
radar picture has a separate brightness control which enables balancing brightness of radar echoes against rest of nav display.
idea was ok but has proven to be wrong...