With Bonza gone and Rex fighting for its life in voluntary administration, the spotlight has once again turned to an old argument: that slot allocation at Sydney Airport unfairly advantages the major players. As the federal government looks to put Sydney slot management out to tender, do Qantas and Virgin really have their thumbs on the scales, as former ACCC chair Rod Sims has suggested? Adam and Jake look at the arguments on each side and the other factors that played into Bonza and Rex's respective failures. Plus, Boeing appoints an engineer as its new CEO – is this a positive sign for the planemaker's culture, or will the same old failures continue?