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38 Cards in this Set

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What does the OFF position of the fuel cross feed selector knob do
Closes the cross feed valve
What does the LOW 1(2) position do
Opens the cross bleed valve and activates the opposite AC fuel pump supplying fuel to both engines from the side of the working pump.

ex. Low 1=AC PUMP 2 FROM RT ENGINE ON. Suppling fuel from RT tank into both both engines
What does the OFF position of the DC fuel pump do
Turns off the DC fuel pump
What does the OFF position of the AC fuel selector knob do
Deactivates the associated AC fuel pump
What does the ON position of the AC fuel selector knob do
Activates the associated AC fuel pump
What is total fuel
What is total each tank
20,935
10,392.5
What is fuel density
6.768
What protects the fuel tank from over pressurization
Vent lines provide capacity for tank venting and are supplemented by a high pressure relief valve to guard against fuel tank overpressurization
How do you reset the fuel used
Through the MCDU
How many fuel pumps are there in each tank and what type
Ejector Pump
AC Electric Pump
Three Scavenge Ejector Pumps
DC Electric Pump (RT TNK ONLY)
Is the AC fuel pump on all the time
NO, only during ejector pump failure or engine start. Also used to supply fuel to the APU when the engine is not running
What is the power source for #1 AC Pump
AC BUS 1
What is the power source for #2 AC Pump
AC ESS BUS
When is the DC fuel pump used
When no AC power is available
What powers the DC Fuel pump
DC ESS BUS 2
What is the only thing that closes a Fuel Shutoff Valve
Fire Handle
What are the two fuel tanks in each wing called
Collector Tank
Surge Tank
The primary surge tanks work off what process
Motive flow from the engine driven fuel pump (low pressure) After pump fuel is driven at high pressure
The primary ejector pumps work off of what process
Motive flow-No moving parts. It is a self sustained pump that is powered by the respective engine motive flow. It requires no electrical power to operate
Where is the fuel tank temperature taken
Left tank only
What will cause an amber fuel level caution to come on
Fuel below 1320 lbs
What will cause a FUEL (1 or 2) LO LEVEL warning to come on
Fuel below 660 lbs
Refueling and defueling is powered how
AC BUS or HOT BATT BUSS if no AC power is available
What is the purpose of the 3 scavenge pumps in each tank
To bring fuel back to the collector box and keep it full
Where are the scavenge pumps located
Outside the collector box
Where are the primary ejector and AC pumps located
In the collector bay
Where is the DC Fuel Pump located
In the #2 collector bay
What are the three ways to shutdown the APU Fuel Valve
1.Normal w/1 minute cool down
2.APU EMERG STOP Button
3.APU FIRE EXT button
How many fuel probes in each wing
14 total-There are 13 capacity probes and 1 660 low fuel level probe in each tank
In an electrical emergency what powers the RT AC pump
RAT
What type of fueling system does the 170 have
Presuure refueling via single point and over wing fueling via gravity
What is the purpose of the fuel tank vent system
1.Keep pressure differential between the tank and ambient.
2.Prevent fuel spillage
How many magnetic fuel indicating sticks per win
3
How are the pressure switches for AC PUMP 1, AC PUMP 2, AND DC PUMP monitored
AC PUMP 1=MAU 1
AC PUMP 2=MAU 3
DC PUMP=MAU 3
What powers the fuel X feed valve
DC ESS BUS 3
When fueling the A/C with AC power what power source is used
DC BUS 1 & 2
When fueling the A/C without AC power what battery is used
HOT BATT BUS 2
If the scavenge pumps failed to return fuel to the collector bay what reading would you get
The 660 low level sensor would illuminate on the EICAS and when you checked the fuel you would still have 3970 lbs of fuel