Fuel Policy Flashcards
What is easyJet’s fuel policy?
To carry the minimum smith of fuel necessary to safely and efficiently complete the flight while meeting regulatory requirements and meeting operational flexibility.
What is FinRes?
What is CNR?
FinRes = 30 minutes holding at holding speed at 1500ft above destination in ISA conditions.
CNR = alternate + final reserve
What are the components of the fuel policy?
- Taxi
- Trip
- Alternate
- Contingency
- Additional
- Final reserve
- Extra
- Discretionary
What is additional fuel and why/when is it carried?
Additional fuel is enough for
- IF NO DEST ALT. 15 minutes holding at 1500ft AAL in ISA above destination
- following an eng fail/depress at the most critical point, fuel enough to descend to suitable alternate, to hold for 15 minutes at 1500ft AAL and land.
The latter is only required if trip, contingency, alternate and final reserve total isn’t enough for such an event.
Why would you use ‘Alternate Flight Planning Procedure’?
What can you do?
Used if
- restricted by payload
- performance restricted
You can
- reduce taxi fuel
- reduce trip fuel based on FMGC dist.
- reduce contingency (need new OFP)
- no dest altn proc.
What is the fuel policy for planning with No Destination Alternate?
- Taxi
- Trip
- Contingency
- ADDITIONAL
- Final reserve
- Extra
- Discretionary
No alternate fuel!
Can be used when the destination
- is less than 6 hours flight time
- has 2 useable, separate runways
- wxr ok for an hour either side of ETA
OR
ISOLATED AERODROME (we don’t do)
When can’t you tanker?
What are the max landing weights when tankering?
Cant tanker when:
- contaminated runway
- slippery or icey runway
Max landing weight = MLW - 1%
What are the extra fuel burns associated with:
- EAI
- EAI and WAI
- Taxi
- APU use
- EAI = 1kg/min cruise. 2kg/min hold.
- EAI and WAI = 2kg/min cruise. 3kg/min hold
- 1 eng taxi 7kg/min. 2 eng taxi 10kg/min
- 2kg/min
What is the fuel burn in the hold?
40 kg/min
When can you fly below CNR and continue to destination?
Aka use your alternate fuel.
- when given an EAT/known delay, landing is assured with at least Final Reserve.
- when landing is assured at destination OR landing at alternate with at least final reserve.
When is a fuel ERA needed?
What is the criteria for a fuel ERA?
A fuel ERA is needed when reduced contingency fuel is carried (only done when no SCF data).
= 25% of the total flight distance from the destination is the centre of a circle whose radius is 20% of the total flight distance. The ERA must be in this circle.
What is reduced contingency fuel?
How is it done?
When can it be used?
Reduced contingency is used if Alternative Flight Planning is required.
If SCF data is available, greatest of:
- 90% coverage
- 5 minutes holding at 1500ft to a minimum of 190kg (a319) or 204kg (a320)
If SCF data is NOT available, greatest of
- 3% planned trip fuel
- 5 minutes holding at 1500ft
PROVIDED A FUEL ERA IS SELECTED.
How much is contingency fuel?
What is it for?
When can you use it?
Contingency = greatest of:
- 95% contingency average
- 5 minutes holding 1500ft over destination
Used for track variations, wind variations, generally any deviations from the flight plan.
Can be used anytime after pushback.
What is extra fuel?
- accounts for (predictable) anticipated delays or operational constraints eg maintenance work, longer routing due night curfew etc
- calculated and provided by easyJet flight planning
What is discretionary fuel and when would you use it?
What is the penalty for carrying discretionary fuel?
- commander’s ability to carry more fuel
- used for TSRA, destination at/near limits, fuel for additional approaches etc
- penalty is 3% of uplifted fuel per hour of flight. (So 6% on a 2 hour flight)
