According to the Mooney M20J aircraft Pilot Operating Handbook, all the calculations must be done in pounds/ lb.
1 lb = 0.45 kg
Fuel AVGAS 100LL
1 litre = 0.26 U.S Gallons
1 U.S Gallon = 3.79 litres
1 U.S Gallon = 5.9 lb
For Pilot's
The materials providede on the website is just for familiarization! For full information please check Pilot Operation Handbook of A/C
