A legitimate question. I simply do not know what the repercussions are, and they ought to be announced. I’d like to know what ALPA intends to do to those who’ve crossed. If ALPA has called for an action they probably ought to delineate what the consequences are. Are those who cross going to be denied membership? Will they be terminated if the union wins its demands? What punitive action can ALPA take?
Telling someone, “Oh you’ll be in big trouble if you do” might work with teenagers but probably not with adults.
Here in the US we had pilots crossing the line at Eastern (EAL). Many of those pilots are now denied jumpseat privileges and have difficulty (impossibility) getting a job with the majors. Many though have found employment at non-union carriers (AirTran). Those are the consequences that evolved from the bitter strike at Eastern, and it’s 11 years latter, some people can’t let go. I can’t imagine CX being that contentious.