The zero fuel mass of an aeroplane is always:
Domanda 39, Mass and Balance - ATPL - Airline Transport Pilot Licence
| The take-off mass minus the wing fuel mass. |
| The take-off mass minus the fuselage fuel mass. |
| The take-off mass minus the mass of take-off fuel. |
| The maximum take-off mass minus the take-off fuel mass. |
