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39 Cards in this Set
- Front
- Back
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How many fuel tanks are there? |
3 Left Center Right |
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When do the FWD and AFT fuel pump switches illuminate "PRESS" in amber? |
Fuel pump output pressure is low |
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Do the center lights illuminate "PRESS" when pump switches are off? |
No, it is inhibited |
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When will "VALVE" illuminate on the cross feed FWD and AFT switches? |
When the crossfeed valve is not in the commanded position |
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When the jettison ARM switch is pushed and ARMED illuminates what does that mean? |
Arms the system and sets fuel to remain to the maximum landing weight |
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On expanded fuel display when does a solid pointer display? (2) |
Main tank fuel differs by more than 1000lbs OR Main tank fuel differs by more than 2000lbs AND a crossfeed valve is open |
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When does a solid amber fuel imbalance pointer display? |
If a FUEL IMBALANCE EICAS message is displayed |
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What happens when the fuel imbalance pointer is flashing? |
Fuel balancing is going the wrong way |
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When is FUEL BALANCED displayed in place of FUEL QTY? |
When the fuel between the main tanks is in balance by 200lbs or 100kg |
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What colour does the fuel temperature display when approaching fuel freeze temperature? |
Amber |
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How many surge tanks are there? |
2, 1 in each main tank |
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What tank does NGS protect? |
Center tank |
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When does the NGS shutdown? |
Single engine operation AND Any cargo fire arm switch pushed |
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How many AC pumps in each tank? |
2 |
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Can a single AC pump provide sufficient fuel to engine? |
Yes, single pump operation supplies sufficient pressure |
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How do you jettison fuel from the center tanks? |
Ensure center fuel pumps are ON |
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Do the center tank fuel pumps shut off automatically? |
Yes, if continuous low pressure is sensed for 15 seconds |
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Are there controls for the DC fuel pump? |
No |
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Where does the residual fuel from the surge tanks go? |
Flow back into the main tanks once there is volume for the fuel |
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When the crossfeed valve does not agree with the switch position how will it be shown? |
The crossfeed switch VALVE light illuminates and an EICAS message is shown |
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Where does APU fuel come from? |
Left fuel manifold |
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Can the DC pump be operated in flight? |
Yes, automatically for left engine relight following dual engine flameout and loss of all AC power |
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Will fuel temperature be displayed when jettison ARMED switch is selected? |
No, TO REMAIN will replace the fuel temperature on the EICAS |
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Can fuel be jettisoned on the ground? |
No, it is inhibited. Regardless of switch position |
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How much fuel will remain in each main tank after jettison? |
8500lbs |
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Does the fuel jettison stop automatically? |
Yes, when the TO REMAIN fuel has been reached. |
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What is the fuel capacity? (2) |
320,800 LBS AND 145,500 KG |
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If a dual engine flameout occurs and loss of all AC power, how does the engine get fuel pressure for an engine start? |
DC fuel pump will automatically operate to provide fuel pressure to the left engine in order to attempt a relight |
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How do you find out how long the jettison fuel dump will take to complete? |
Fuel synoptic page during jettison process |
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When do the scavenger pumps work? |
the scavenger pump will operate automatically and send fuel from center tank to main tanks. |
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What are the approved fuels that can be used? |
Jet A Jet A1 JP-5 JP-8 |
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What is the maximum fuel tank temperature? |
+49 C |
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Minimum tank temperature range prior to takeoff? |
Not less than -40C or 3C above the fuel freezing point whichever is higher |
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On the Jettison nozzle switches when does the VALVE light illuminate amber? |
When the nozzle valve is NOT in the commanded position |
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When do the jettison nozzle lights ON light illuminate? |
When the ARM switch has been selected and ARMED light is illuminated and total fuel quantity is greater than the fuel to remain |
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When the jettison system is armed and you PULL the FUEL TO REMAIN selector what will occur? |
It changes the mode from MLW to MAN. Basically you override the fuel to remain at a different number other than maximum landing weight |
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What fuels are prohibited? |
JP-4 Jet B fuels |
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If main tanks are less than full what restriction is placed on carrying fuel in the center tank? |
Center tank can have no more than 3000 LBS if main tanks are not full. That 3000LBS must be included in ZFW and must not exceed the MZFW |
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Is the fuel scavenge system inhibited after center tank switches are turned off? |
Yes, 45 minutes. For leak detection |
