Union Civil Air said it would apply to the Fair Work Commission to authorise a vote in a move that could potentially lead to huge delays and cancellations across airports nationwide.
Airlines and airports are readying for the biggest Easter holiday break post-COVID, but cost of living fears and high ticket prices mean numbers will still not make a full recovery from the pandemic.
The award-winning facility comprises four terminals on a 9.7-square-mile site, with a fifth terminal on the way.
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