Well, hold on ..maybe the poster meant that this is a fairly new ruling, and that any "new" call signs have to be the name of the airline. No . .wait again .. Virgin America=REDWOODYes...you could be correct...OH WAIT:
British Airways..........SPEEDBIRD
Air Lingus.................SHAMROCK
Atlas........................GIANT
China Airlines...........DYNASTY
There's more: http://www.bbc.co.uk/dna/hub/A698231
It's time to put this crap behind us. The NEW US Airways home office is in the Valley of the Sun. Practice Cactus.