From what I can figure out the 6 747 that haven't had the refit are due for D checks in the next 18 months . Cost approx $6 million each. So by getting rid of them cash flow is saved approx $36 million. By giving Joburg to Emirates and code sharing Dallas with American Airlines that is about 6 airframes. Hope I'm wrong. We will find out at the end of Feburary.