Practice Test Geeks(ADX) Aircraft Dispatcher Practice Test
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ADX Fuel Management and Planning Flashcards

6 cards from real ADX practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 ADX Fuel Management and Planning flashcards as text

  1. What is ETOPS fuel planning?

    Answer: Extended-range fuel planning for twin-engine aircraft on routes far from adequate diversion airports

    ETOPS fuel planning requires carrying sufficient fuel to divert to an adequate airport within the approved ETOPS diversion time at single-engine drift-down speed.

  2. What is 'fuel tankering'?

    Answer: Loading extra fuel at a lower-cost departure station to minimize or avoid refueling at a higher-cost destination

    Fuel tankering exploits price differentials between stations by carrying surplus fuel from where it is cheap to where it is expensive, reducing overall fuel costs.

  3. Why is maximum zero fuel weight (MZFW) important in fuel planning?

    Answer: It limits how much payload can be loaded before fuel is added to avoid overstressing the wing roots

    MZFW is a structural limit protecting the wing bending moment; if MZFW would be exceeded, payload must be reduced regardless of the fuel required.

  4. How is estimated time en route (ETE) used in fuel calculations?

    Answer: It is multiplied by the aircraft's fuel flow rate to estimate the fuel volume burned for a flight segment

    Multiplying ETE by the fuel flow rate (in pounds or kilograms per hour) gives the dispatcher the estimated fuel burn for that segment of the flight.

  5. What is the key difference between 'block fuel' and 'trip fuel'?

    Answer: Block fuel covers engine start through engine shutdown including taxi; trip fuel covers only the airborne en-route segment

    Block fuel is the total fuel from engine start at the gate to engine shutdown at the destination, encompassing taxi, takeoff, cruise, descent, and landing taxi.

  6. Which regulation specifically governs fuel requirements for 14 CFR Part 121 domestic operations?

    Answer: 14 CFR Part 121 Subpart U, including sections 121.639 and 121.645

    Subpart U of Part 121 (sections 121.639–121.647) contains the specific fuel requirements for domestic, flag, and supplemental operations under Part 121.