On Office -> Balance Sheet there is an item Prepaid Expenses. It includes all of the money you paid as deposits on leases (new or used).
Then, when aircraft gets delivered, the 4 month prepayment gets used up, which creates the scenario you are seeing: Your cash goes up faster than the Profit.
To know the exact amount for the week, go to Office -> Cash Flow
There is an item: "Adjustments of items where a payment is not included "
it has 2 components I mentioned.