if he took the photo from public property it is "HIS" shot. so definetel copyright violation ... , carriers are very often arguing : it is our plane, so is a photo of that plane also ours - THAT IS JUST WRONG!
It's actually not wrong. The laws may vary from country to country but in the USA, photographing a copyrighted work (in this case, the corporate livery of Air Asia) is considered reproduction of that copyrighted work and if Air Asia wanted to, they could sue you
for copyright infringement. It doesn't matter if it's in a public place or not. Now, they'd probably lose, unless you actually managed to sell a few copies of the photo on this site, because non-commercial use of the photo (even posting it on the net) would probably be considered fair use. They'd also get a big PR
black eye, which is the real reason why nobody ever actually sues over stuff like this. They're content to have the free advertising.
But technically, you are required to ask permission from the original copyright holder to photograph a copyrighted work. Obviously, nobody here ever does this so all the photographers here are risking C&D letters, all the time. The fact that Air Asia is using this photo, though, could be considered granting permission after the fact. So while it may not seem so given what photographers here get away with all the time, legally speaking their using the photo is actually a good thing.
Here's a page with a bit more info on this: http://www.photosecrets.com/p14.html
And a little more technical and detailed of an explanation, albeit not specific to photography (most copyright law is not specific to any one medium):
I'm tired of being a wanna-be league bowler. I wanna be a league bowler!