I have noticed there is a discrepancy between the real maintenance cost of an aircraft (Accounting -> Bank Account -> Maintenance of XX-XXX (1234 maintenance ratio) 789AS$) and the prorated figure in the Flight Information page (under Flight-related cost section).
So for instance we have this jet that each day takes AS$ 2897 from the bank account, but the sum of the maintenance in the different flight information pages amounts for AS$ 9684.
I was trying to establish some kind of ratio Real vs Flight Info looking into all my flights and aircraft types (like 1:3,34 in the example above) but this ratio varies with every aircraft. The only thing clear is that the real sum is always lower then indicated in the Flight Info.
Can anybody help out and clarify where is the calculation wrong?