Flight Efficiency

Question 1

What pourcentage of all cost does Fuel represent

Answer 1

32%

1% fuel saving = £13 millions annually save = 35kg/sector

Question 2

What is the cost of weight ?

What pourcentage is the fuel burn to carry 1kg ?

Answer 2

3-4% of the weight in fuel burn / hour of flight

1000kg will cost 30kg/h

On the company fleet, carrying 1kg extra costs £15800/year

Question 3

What is cost index for diversion ?

Answer 3

Cost index 0

Question 4

Unless authorized by OCC, what is the maximum cost index ?

Answer 4

Cost index 12

Question 5

If APU is used but not APU Bleed, what is the fuel burn saving ?

Answer 5

Approximately 15%

Question 6

What is the potable water filling guidance for flights less than 4h ?

Answer 6

70% filling up

Question 7

What is the typical potable water usage per hour of flight with normal passenger load ?

Answer 7

10%/hour

Question 8

What is the average fuel save for OETD ?

Answer 8

21Kg

Question 9

What is easyjet ATC Delays policy ?

Answer 9

Push on time

If delay less than 30 minutes, absorb delay by taxiing

If delay more than 30 minutes, consider remote holding

Question 10

What is the fuel saving of a NADP2 compared to NADP1 ?

Answer 10

14Kg save

Question 11

What is the impact of flying M0.79 instead of M0.77 ?

Answer 11

1.5% to 2.5% increase in fuel burn

Question 12

What are the conditions to make a correction if you realise that temperature or wind is different from planned on the ofp ?

Answer 12

30° or 30kts in wind

5° in temperature

It is to ensure that FMGC fuel and Time predictions are as accurate as possible

Question 13

What is the hé fuel saving for FLAPS 3 landing in a 319 and a 320 ?

Answer 13

319 = 16Kg

320 = 9kg

Question 14

What is OETA average fuel Saving

Answer 14

13Kg

Question 15

What is the average fuel saving of sharklets ?

Answer 15

3%