Originally Posted by
Babbalito
"The pilots were sold out by their union..."
trade union
noun- an organized association of workers in a profession formed to protect and further their rights and interests.
Simple really but most pilots in the group are too dumb and/or selfish and/or weak to act collectively and effectively.
You use too many words - seniority cancels "rights and interests" of an association of workers - it is each for their own best interest.
So never can be organised by a union.