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Refer to figure.
When flying a commercial air transport route, the pilot makes fuel checks at positions TESGA and LAMSI. Considering the data from the fuel checks, determine the remaining fuel which can be estimated overhead BABIT.
  • A
    8.6 tonnes
  • B
    7.7 tonnes
  • C
    7.3 tonnes
  • D
    8.3 tonnes

(1) Determine the Actual Fuel Consumption (t/h) TESGA - LAMSI:

Calculate flight time TESGA - LAMSI:
Actual time over TESGA: 2347
Actual time over LAMSI: 2413
Flight time = 26 min
Calculate Fuel consumed TESGA - LAMSI:
Actual fuel over TESGA: 12.3 t
Actual fuel over LAMSI: 10.7 t
Fuel consumed = 1.6 t

Fuel Consumption (t/h) = (1.6 t / 26 min) x 60 min/h
  • Fuel Consumption (t/h) = 3.69 t/h

(2) Extract from the OFP the flight time from LAMSI - SASAL and SASAL - BABIT:

Estimated En-route Time (EET) from LAMSI - SASAL: 18 minutes

Estimated En-route Time (EET) from SASAL - BABIT:
16 minutes

  • Estimated En-route time (EET) from LAMSI - BABIT = 18 minutes + 16 minutes = 34 minutes

(3) Determine fuel comsumption from LAMSI to BABIT:
Fuel Consumed LAMSI - BABIT = (3.69 t/h x 34 min) : 60 min/h
  • Fuel Consumed LAMSI - BABIT = 2.091 t

(3) Determine fuel estimated over BABIT:
Fuel estimated over BABIT = Fuel over LAMSI - Fuel consumed between LAMSI and BABIT
  • Fuel estimated over BABIT = 10.7 t - 2.091 t = 8.609 t

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