ATPL: In mass and balance calculations the 'index' is:
Domanda 83, Mass and Balance - ATPL - Airline Transport Pilot license
| An imaginary vertical plane or line from which all measurements are taken. |
| A location in the aeroplane identified by a number. |
| The range of moments the centre of gravity (cg) can have without making the aeroplane unsafe to fly. |
| Is a figure without unit of measurement which represents a moment. |
