Not flown the A340 but i think
N/WS DISC is Nose wheel steering disconnect
TERR on ND is terrain on Navigation display (EGPWS)- but its located with landing gear section so might be well off the mark !!!
No Active ATC- thats something to do with the transponder i think, as the A/C appears to be on the ground then there will be no Sqwuak frequency or could possibly be something to do with a data link?
Anti skid switch- Its just another aircraft system so if its faulty you can turn it off but this will incur a performance penalty for t/o and landing.
T TK XFRD: Trim Tank cross feed??? it looks like its been refuelled so it could be transferring fuel from one tank to another, its green so its a normal operation when refuelling by the looks of things.
As i said not flown the 340 so maybe way off the mark with these answers just a guestimate.
HFS
