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Given the following information, what is the Underload/Overload?

Allowed Take-off Mass: 4300 kg
Operating Mass: 3296 kg
Total Fuel Mass: 650 kg
Mass of the crew and their baggage: 187 kg
Traffic Load: 1014 kg

  • A
    An Overload of 660 kg.
  • B
    An Overload of 10 kg.
  • C
    An Underload of 354 kg.
  • D
    An Overload of 197 kg.

Traffic Load (TL) is is the total mass of passengers, baggage and cargo, including any ’non-revenue’ load.

Dry Operating Mass (DOM) is the total mass of the aeroplane ready for a specific type of operation excluding usable fuel and traffic load. The mass includes items such as crew and crew baggage, catering and removable passenger service equipment, potable water and lavatory chemicals, food and beverages.

Operating Mass (OM) is the DOM plus fuel, but without traffic load.

For this question we will only consider the take-off situation (ignoring the landing and the zero-fuel situation, since the given data do not permit so) subtracting from the Allowed Take-off mass structural limit, the OM and the Traffic load to figure out if the aircraft is overloaded or underloaded: Allowed TOM - OM - Traffic Load = 4300 kg - 3296 kg - 1014 kg = - 10 kg.

The "-" sign indicates that it is overloaded by 10 kg.


NOTE:

Be careful to avoid any double mass calculations, due to the fact that some masses are already included in other masses, e.g. fuel mass is included in OM, crew and crew baggage mass is included in DOM, DOM is included in OM and so on.

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