1. Always buy the fuel in the cheapest possible location.
1.1 You can find Airport fuel prices in the FSAirlines Airport database
1.2 Fuel Price for Helsinki Vantaa is 1,09, which is below average.
2. You should buy fuel for both Tour and return legs of your Short and Medium Flights at Helsinki Vantaa
2.1 You should only buy fuel for the Tour leg of your flight if the destination airport has lower fuel prices
than departure airport
3. Reserve, variable by Aircraft and Flight legth and wind conditions.
3.1 5-10% of TRIP for wind compensation
3.2 30 min, for Holding or Go-Around
3.3 x kg for Alternate, depending on the distance.
3.4 500 - 1000kg, contingency.
4. Absolute minimums (Never exceed)
4.1 Heavy Jet 1500kg
4.2 Medium Jet 1000kg
4.3 Light Jet 500kg
4.4 Turbopropeller 200kg