Q4 2020 cash burn rates cannot be sustained. Q1 2021 will not see much improvement. One would assume that AC is hoping to see daily cash burn rates halved by the end of Q2 2021.
Right now it is all about the revenue side of the equation. Current passenger volume sitting at 8% of pre-COVID levels. Some variable expenses (fuel/wages) have been mitigated, but a significant amount of overhead represents a fixed expense (notwithstanding deferred lease payments that will have to be repaid over time).
Revenue recovery is the key. Get out your crystal ball to estimate when and by how much. There is also the issue of yields, if it is just the low margin leisure segment that recovers first.