Term
| How many fuel tanks does the airplane have? |
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Definition
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Term
| Where is fuel temperature taken? |
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Definition
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Term
| What types of fuel pumps are in each wing? |
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Definition
-Primary ejector pumps
-ACMP
-DCMP
-3 Scavange ejector pumps |
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Term
| What is the Primary ejector pump? |
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Definition
-Venturi pump with no moving parts and no electrical power used by the respective engine.
-Powered by motive flow. |
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Term
| What is the purpose of the ACMP? |
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Definition
-Back-up pump is case of primary ejector pump failure.
-Engine start
-Crossfeed operations |
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Term
| What is the purpose of the DCMP? |
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Definition
| Used for APU or engine start if AC power or the ACMP is not available. |
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Term
| What is the purpose of the scavenge pumps? |
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Definition
| Maintains fuel level in the collector box. |
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Term
| What pump(s) is used once an engine is started? |
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Definition
| Associate primary ejector pump |
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Term
| What is the purpose of the collector box? |
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Definition
-Keeps the fuel pumps submerged
-Ensures constant fuel flow to the respective engine. |
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Term
| What is the surge/vent tank? |
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Definition
-Collects fuel during wing-down maneuvers and returns it to the main tanks once the wings are level.
-Equalizes tank pressure with atmosphere in flight and during refueling. |
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Term
| Can fuel be transferred from tank-to-tank or be dumped overboard? |
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Definition
| No (the only exception is by performing a maintenance function on the ground). |
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Term
| What happens when the crossfeed switch is selected to LOW 1? |
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Definition
-Crossfeed valve is opened.
-Commands the ACMP 2 to ON to provide fuel from right tank to both engines. |
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Term
| What is the only way to close the engine fuel SOV? |
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Definition
| Pull the associated engine fire extinguishing handle. |
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Term
| When will FUEL 1(2) LO LEVEL EICAS be presented? |
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Definition
| 660 lbs of fuel remaining in the associated tank. |
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Term
| What components are in each tank? |
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Definition
Ejector fuel pump
AC Motor Pump (ACMP)
3 Scavenge Pumps
DC Motor Pump (#2 Tank Only)
Temp (#1 Tank only) |
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Term
| Can you refuel without applied to the plane? |
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Definition
| Yes. Refuel panel on DC Hot Batt Bus 2 |
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Term
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Definition
Engine start
Motive flow fail
Cross-feed |
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Term
| If you get a LO FUEL indication but show as much as 3970 lbs of fuel, what can that indicate? |
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Definition
| Loss of motive flow and scavenge pumps and collector tanks are not staying full. 3970 lbs is the point the main tanks are even with the collector tanks. |
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