When do you declare Mnimum Fuel
The Commander shall declare Minimum Fuel when having committed to land to a specific Airfield and any change to the clearance to that Aerodrome may result in landing with less than planned Final Reserve
When do you declare Mayday Fuel
The Commander shall declare a situation of fuel emergency by broadcasting MAYDAY, MAYDAY, MAYDAY, FUEL, when the calculated usable fuel predicted to be available upon landing at the nearest aerodrome where a safe landing can be made is less than the planned final reserve fuel.