3 / 20

Given:

Dry Operating Mass = 33 510 kg
Traffic Load = 7600 kg
Trip Fuel = 2040 kg
Final Reserve Fuel = 983 kg
Alternate Fuel = 1100 kg
Contingency Fuel = 5% of Trip Fuel

Which of the listed estimated masses is correct?

  • A

    Estimated take-off mass = 43 295 kg.

  • B

    Estimated landing mass at destination = 43 295 kg.

  • C

    Estimated take-off mass = 45 233 kg.

  • D

    Estimated landing mass at destination = 43 193 kg.

TAKE-OFF MASS (TOM) - The mass of the aeroplane including everything and everyone contained within it at the start of the take-off run.

=> Take-Off Mass (TOM) = Dry Operating Mass (DOM) + Traffic Load (TL) + Take off Fuel (TOF)*

  • TOF * = Trip Fuel + Contingency Fuel + Alternate Fuel + Final Reserve
  • TOF = 2040 kg + 102 kg + 1100 kg + 983 kg = 4225 kg

Take Off Mass (TOM) = 33 510 kg + 7600 kg + 4225 kg = 45 335 kg

LANDING MASS (LM) - As we reach our Destination, we will have consumed Trip fuel. Therefore, Landing mass equals Take-off Mass minus Trip Fuel.

=> Landing Mass (LM) = Take off Mass (TOM) - Trip Fuel
LM = 45 335 kg - 2040 kg = 43 295 kg

Note: Contingency fuel is loaded for deviations from planned and actual trip fuel, i.e. for unforeseen factors. They might be deviations from forecast weather conditions, deviations from the planned route or from planned cruising levels and/or altitudes. Under normal conditions, contingency fuel should remain in our tanks upon reaching our destination.

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.

  • United Kingdom
    1
Keyboard Shortcut Use Keyboard Shortcuts