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