ADX ADX Fuel Management and Planning 2

Question 1

What is ETOPS fuel planning?

Accepted Answer

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

Answer

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.

Question 2

What is 'fuel tankering'?

Accepted Answer

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

Answer

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.

Question 3

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

Accepted Answer

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

Answer

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

Question 4

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

Accepted Answer

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

Answer

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.

Question 5

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

Accepted Answer

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

Answer

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.

(ADX) Aircraft Dispatcher Practice Test

(ADX) Aircraft Dispatcher Practice Test

ADX ADX Fuel Management and Planning 2