Flight Efficiency Flashcards
What percentage of all cost does Fuel represent
32%
1% fuel saving = £13 millions annually save = 35kg/sector
What is the cost of weight ?
What percentage is the fuel burn to carry 1kg ?
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
What is cost index for diversion ?
Cost index 0
Unless authorized by OCC, what is the maximum cost index ?
Cost index 12
If APU is used but not APU Bleed, what is the fuel burn saving ?
Approximately 15%
What is the portable water filling guidance for flights less than 4h ?
70% filling up
What is the typical potable water usage per hour of flight with normal passenger load ?
10%/hour
What is the average fuel save for OETD ?
21Kg
What is easyjet ATC Delays policy ?
Push on time If delay less than 30 minutes, absorb delay by taxiing
If delay more than 30 minutes, consider remote holding
What is the fuel saving of a NADP2 compared to NADP1 ?
14Kg save
What is the impact of flying M0.79 instead of M0.77 ?
1.5% to 2.5% increase in fuel burn
What are the conditions to make a correction if you realise that temperature or wind is different from planned on the ofp ?
30° or 30kts in wind 5° in temperature It is to ensure that FMGC fuel and Time predictions are as accurate as possible
What is the fuel saving for FLAPS 3 landing in a 319 and a 320?
319 = 16Kg
320 = 9kg
What is OETA average fuel Saving
13Kg
What is the average fuel saving of sharklets ?
3%
