When it rains, it pours – after the collapses of Bonza and Rex left Australia once more in thrall to the domestic airline duopoly, now no fewer than three new contenders, including Koala, Zinc, and another new kid on the block, seem to be planning to step up and take on the big boys.

The latest player? Vietnamese low-cost carrier Vietjet, which has sparked rumours of a new Australian subsidiary with reports of an AOC application with CASA as well as a pile of slot allocations at Sydney Airport. Is a Vietjet entry really on the cards … and can it exorcise the ghost of Tigerair?

On this week's Australian Aviation Podcast, Jake and David dissect the rumours of Vietjet's impending tilt at the Australian domestic market, and why it might be the best-placed challenger to hit the skies running and make the major carriers sweat.

Plus, a war of words between Airservices and the air traffic controllers' union over delays in Sydney – who's really to blame?