Air traffic controllers are short-staffed and exhausted – and new recruits face a difficult aptitude test and must train in MelbourneGet our breaking news email, free app or daily news podcastTravellers flying in and out of Sydney airport had already been dealing with heavy delays even before a Jetstar plane narrowly avoided colliding with a Qatar Airways plane on the tarmac early on Sunday.The day before, more than 150 flights passing through Sydney were delayed as the airport grappled with a lack of air traffic controllers, highlighting how just how delicate the rostering situation is. Continue reading...