All other things being the same then yes, it would be something in your favour. I have attended a number of airline interviews and it was only ever something that was viewed positively.
However, don't expect it to get you a job though. It is simply another thing for you to use to demonstrate your interest & committment to the profession, aswell as somewhere you learned to work as part of a team bla bla. Ie it doesn't get you anywhere on its own.
Good luck
. BM