Results
Q1. Minimum Fuel calculation: The trip fuel for a jet aeroplane to fly from the departure aerodrome to the destination aerodrome is 5,350 kg. Fuel consumption in holding mode is 6,000 kg/h. The quantity of fuel needed to carry out one go-around and land on the alternate airfield is 4,380 kg. The destination aerodrome has a single runway. What is the minimum quantity of fuel which should be on board?
Correct answer is A – 13,000 kg
Q2. For turbojet engine driven aeroplane: Taxi fuel: 600 kg Fuel flow for cruise: 10,000 kg/h Fuel flow for holding: 8,000 kg/h Alternate fuel: 10,200 kg Planned flight time to destination: 6 h Forecast visibility at destination: 2000 m The total mass:
Correct answer is A – 77,800 kg
Q3. You are to determine the maximum fuel load which can be carried in the following conditions: Dry operating mass: 2800 kg Trip fuel: 300 kg Payload: 400 kg Maximum take-off mass: 4200 kg Maximum landing mass: 3700 kg
Correct answer is B – 800 kg
Q4. Given: Maximum allowable take-off mass: 64,400 kg Maximum landing mass: 56,200 kg Maximum zero fuel mass: 53,000 kg Dry operating mass: 35,500 kg Estimated load: 14,500 kg Estimated trip fuel: 4,900 kg Minimum take-off fuel: 7,400 kg Find the maximum allowable take-off fuel:
Correct answer is D – 11,100 kg
Q5. An aircraft has an average fuel consumption of 7500 kg per hour at 480 kts. Calculate its maximum range and endurance for a bulk fuel load of 80,000 litres at SG 0.8, the start, run up + taxi allowance is 1200 kg and a minimum reserve fuel of 10,000 kg.
Correct answer is A – Range 3379.2 nm & Endurance 7.04 hr
Q6. Fuel Consumption and Replanning The fuel burn of an aircraft turbine engine is 220 l/h with a fuel density of 0.80. If the density is 0.75, the fuel burn will be:
Correct answer is A – 235 l/h
Q7. After flying for 16 minutes at 100 kt TAS with a 20 kt tailwind component, you have to return to the airfield of departure. You will arrive after:
Correct answer is B – 24 minutes
Q8. Fuel flow per hour is 22 US-GAL, total fuel on board is 83 IMP GAL. What is the endurance?
Correct answer is A – 4 HR 32 MIN
Q9. The tank capacity of an aircraft is 310 US GAL. Fuel specific gravity is 0.78 kg/litre. The tanks are now 3/4 full. You want to refuel so that total fuel will be 850 kg. How much fuel will you have to refuel? Answer in pounds.
Correct answer is B – 360 LB
Q10. Fuel flow per hour is 31 US-GAL, total fuel on board is 260 Liter. What is the endurance?
Correct answer is C – 2 HR 13 MIN
Q11. A fuel amount of 146 Imp Gal allows an endurance of 4 HR 26 Min. What is the corresponding fuel flow?
Correct answer is C – 39.5 US Gal / HR
Q12. A fuel amount of 160 US Gal allows an endurance of 3 HR 10 Min with a light twin-engine piston aircraft. What is the corresponding fuel flow per engine?
Correct answer is A – 25.3 US Gal / HR
Q13. Given: Fuel flow 42 US Gal / HR, specific gravity 0.72, TAS 210 KT. What is the specific fuel consumption?
Correct answer is D – 0.545 kg / NM air distance
Q14. Given: Fuel flow 28 Imp Gal / HR, specific gravity 0.72, TAS 154 MPH. What is the specific fuel consumption?
Correct answer is B – 0.68 kg / NM air distance
Q15. Given: Fuel flow 28 Imp Gal / HR, specific gravity 0.72, TAS 154 MPH. What is the specific range?
Correct answer is A – 1.46 NM air distance / kg
Q16. Which of the following formulas is correct for the calculation of Maximum Range?
Correct answer is A – Maximum Range = Safe Fuel available x Specific Range
Q17. Given: fuel flow 8.4 t/HR, specific gravity 0.80, Mach number 0.76, OAT –36°C. What is the specific fuel consumption?
Correct answer is B – 18.4 kg / NM air distance
Q18. Given: fuel flow 6.5 t/HR, specific gravity 0.80, Mach number 0.68, OAT –30°C, headwind component 25 KT. What is the specific fuel consumption?
Correct answer is D – 16.7 kg / NM ground distance
Q19. During an IFR flight in a Beech Bonanza, the fuel indicators show that the remaining amount of fuel is 100 lbs after 38 minutes. The total amount of fuel at departure was 160 lbs. For the alternate fuel, 30 lbs is necessary. The planned fuel for taxi is 13 lbs. Final reserve fuel is estimated at 50 lbs. If the fuel flow remains the same, how many minutes can be flown to the destination?
Correct answer is A – 12 minutes
Q20. For a planned flight, the calculated fuel is as follows: Flight time: 3h 06min Reserve fuel, at any time, should not be less than 30% of the remaining trip fuel. Taxi fuel: 8 kg Block fuel: 118 kg How much fuel should remain after 2 hours flight time?
Correct answer is C – 30 kg trip fuel and 9 kg reserve fuel
Q21. For a planned flight, the calculated fuel is as follows: Flight time: 2h 42min Reserve fuel, at any time, should not be less than 30% of the remaining trip fuel. Taxi fuel: 9 kg Block fuel: 136 kg How much fuel should remain after 2 hours flight time?
Correct answer is D – 25 kg trip fuel and 8 kg reserve fuel
Q22. A VFR flight planned for a Piper Seneca III. At a navigational checkpoint, the remaining usable fuel in tanks is 60 US gallons. The alternate fuel is 12 US gallons. According to the flight plan, the remaining flight time is 1h 35min. Calculate the highest rate of consumption possible for the rest of the trip.
Correct answer is D – 21.3 US gallons/hour
Q23. Minimum planned take-off fuel is 160 kg (30% total reserve fuel is included). Assume the groundspeed on this trip is constant. When the airplane has done half the distance, the remaining fuel is 70 kg. Is diversion to a nearby alternate necessary?
Correct answer is C – Diversion to a nearby alternate is necessary because the remaining fuel is not sufficient.
Q24. A multi-engine piston airplane is on an IFR flight. The fuel plan gives a trip fuel of 65 US gallons. The alternate fuel, final reserve included, is 17 US gallons. Contingency fuel is 5% of the trip fuel. The usable fuel at departure is 93 US gallons. At a certain moment, the fuel consumed according to the fuel gauges is 40 US gallons and the distance flown is half of the total distance. Which statement is correct?
Correct answer is B – The remaining fuel is not sufficient to reach the destination with reserves intact.
