xx instead of left and right triangles on your wheel page across the board and LGCIU 1+2 fault on the EWD will show a dual LGCIU failure.
if you have an LGCIU internal 1 fault but with LGCIU 2 still in operation, as long as LGCIU 1 has power LGCIU 2 can send the information through the box, hence indication as they cross-talk.
If LGCIU 1 has detonated in the rack what is probably more than likely than an internal card fault there is no chance of any indication as it is now not powered.
LGCIU 1 + 2 fault means you should not trust any information these boxes are giving you only the amber crosses saying they are dead hence why Airbus ask you to gravity extend.
You may have the downlock sensors available that might get through the wreckage of the boxes but as previously said they are more than likely smoking in the MEC.
Last edited by Beeline; 11th July 2012 at 18:01.