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Given the following information for a Commercial Air Transport operation, calculate the maximum possible Extra Fuel, including any fuel penalty, that can be uplifted.

MTOM: 233 000 kg
MLM: 182 000 kg
MZFM: 170 000 kg
DOM: 122 550 kg
Traffic Load: 41936 kg
Trip Fuel: 52139 kg
Planned T/O Fuel: 57143 kg
Taxi Fuel: 300 kg
Fuel penalty for carrying Extra Fuel: 394 kg per 1000 kg of Extra Fuel
Fuel tank capacity: 110 000 kg

  • A
    5514 kg
  • B
    11371 kg
  • C
    12510 kg
  • D
    11071 kg

In order to find out the amount of fuel which can be uplifted you have to calculate the MTOM, MLM and tank capacity limitation
Note: MZFM does not limit fuel.

BASED ON MTOM:

  • TOM – DOM – TL – Take Off fuel = 233 000 – 122 550 – 41 936 – 57 143 = 11 371 kg
BASED ON MLM:
  • MLM – DOM – TL – LDG fuel = 182 000 – 122 550 – 41 936 – 5 004 = 12 510 kg
  • On top of this calculation, for the MLM limitation we have to apply the fuel penalty - which will be burned off during the flight.
Rule of thumb: to calculate fuel penalty, use the following formula:
(MLM extra / 1000) x Y
- where "Y" is the variable given by the question, in this case = 394

(12 510 /1000) x 394 = 4929 kg
Extra fuel that can be loaded is the sum of MLM extra (12 510 kg) and fuel penalty:
12 510 kg + 4929 kg = 17 439 kg

BASED ON TANK CAPACITY:
110 000 kg – (57 143 kg + 300 kg) = 52 557 kg


=> The most restricting value in based on MTOM 11 371 kg

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