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Flying > Fuel > Flashcards

Fuel Flashcards

1
Q

Taxi fuel

A

10kg/min

7kg/min one engine

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2
Q

Holding fuel (1500ft)

A

40kg/min

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3
Q

Approach fuel

A

17kg/min

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4
Q

With engine anti ice

A

+1kg/min cruise (1.1 climb)

+2kg/min hold

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5
Q

With wing and engine anti ice

A

+2kg/min cruise/climb

+3kg/min holding

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6
Q

Final reserve fuel

A

Fuel to fly for 30 mins at holding speed 1500ft above alternate aerodrome in standard conditions at estimated weight.

FMGC plans Conf 1

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7
Q

APU burn

A

2kg/min

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8
Q

When is landing assured?

A

Landing can be completed in the event of any forecast deterioration of the weather and plausible single failure of ground or airborne facilities.

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9
Q

Minimum fuel required

A 
Taxi
Trip
Contingency
Alternate fuel (if req)
Additional fuel (if req)
Final reserve
Extra fuel (if req)
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10
Q

Contingency fuel is:

A

Higher of:
5% of planned (or remaining) trip fuel
or
Fuel to fly for 5 mins at 1500ft above destination

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11
Q

Extra fuel penalty

A

3% per hour of extra fuel carried.

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12
Q

CNR (company normal reserves) =

A

Alternate + final reserve

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13
Q

Alternate flight planning procedure

A

In case of load or performance restrictions.
Reduce taxi fuel or trip fuel if shorter route expected (add 5kg/nm or reduce 4kg/nm).
Use enroute alternate - reduce contingency to 3% or 5mins above destination.

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14
Q

Requirement for flight with no alternate

A

Flight time

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15
Q

Fuel saving

A 
Delay APU start
Delay engine start
OETD/OETA
Lowest flap setting departure
Landing lights retract green dot/extend on final
Fly at or above optimum
Update winds
Fly cost index and managed speeds
Flap 3 landings
Idle reverse
Use of ground power
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16
Q

Centre tank pumps are inhibited when

A

Slats extended
On ground after first 2 mins
When associated wing tank is full (until 500 kg burnt)
5 mins after centre tank empty

17
Q

What is the commander’s responsibility with respect to fuel?

A

The commander shall not commence a flight unless they are satisfied that the aircraft carries at least the planned amount of fuel and oil to complete the flight safely taking into account the expected operating conditions.

18
Q

How does gravity feeding work?

A

Engines fed by gravity from inner tank suction valves (usually closed from pump pressure in normal operation)

19
Q

Fuel feed sequence

A 
Centre tank * unless inhibited  (certain models fuel transfers to inner) 
Inner tanks (down to 750kg)
Outer tanks (transfer to inner)
20
Q

Fuel mode selector in manual does what?

A

Runs the centre tank pumps
(Or in new 320’s it will open the centre tank transfer valves, must select CTR TK XFR to off when inner tanks full or centre tank empty)

21
Q

Describe the IDG cooling system

A

Some of the fuel supplied to each engine goes from the high pressure fuel line through the IDG heat exchanger to the fuel return valve and into the outer tank, if full it can overflow to inner tank.

22
Q

When do we not need a destination alternate?

A

Flight time less than 6 hours.
Two separate runways available and usable.
Weather forecasts indicate +/-1 hr ETA ceiling 2000ft or circling +500ft and 5000m visibility.

23
Q

When do we need 2 destination alternates?

A

Forecasts indicate the +/- 1hr ETA the weather conditions will be below planning minima

Or

No meteorological info for destination available.

24
Q

When is a take off alternate required and what is the planning minima for a take off alternate?

A

Required when performance or met conditions preclude a return to departure airfield.

Forecasts must be above the applicable minima for expected instrument approach in use.

25
Q

When can you not tanker fuel?

A

When landing expected on contaminated or icy runway.

26
Q

Commercial alternate/fuel alternate. Whats the difference?

A

Fuel alternates should only be selected when the weather and operational conditions at destination make a diversion unlikely.

OMB

27
Q

How many consecutive approaches (after a go around) are allowed according to easyJets policy?

A

Maximum Number of Attempted Approaches
No more than two successive approaches may be flown when there has been a go-around due to weather conditions unless there has been a significant improvement to the weather, or a state of emergency exists.

In exceptional circumstances, a third approach may be flown when a go-around has been carried out for non-weather related reasons providing the Commander is satisfied that landing is assured.

OM A 8.4.2

28
Q

If your fuel quantity indicators are failed or performance degraded how can you get a more accurate FOB figure?

A

Update FOB figure on the FUEL page to FF only.

FCOM FMS2

Flying (19 decks)

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