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55 Cards in this Set
- Front
- Back
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Does the Q-400 have any "cross feed" capability? |
No
It is not possible to feed an engine from the opposite tank. Only "Tank-to-Tank" transfer is possible! |
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What does the "Left" fuel tank supply fuel to?
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Left Engine
APU |
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What does the "Right" fuel tank supply fuel to?
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The Right engine only!
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What are the names of the three (3) sections of each wing fuel tank?
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Surge Bay
Main Tank Collector Bay |
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Where is the "Surge Bay" section of the wing fuel tanks physically located?
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Just inside of the ailerons on each tank (outer most portion of the tank).
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What is the purpose of the "Surge Bay" in each wing fuel tank?
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It is used for:
1. Main Tank Venting 2. Fuel Recovery 3. Provides a positive head of pressure to the fuel system while "inflight". |
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What controls the pressure between the "Surge Bay" and the "Main Fuel Tank"?
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Two (2) "Float Vent Valves" located near the top of the Surge Bay Tank and a "Vent Line" between the two tanks.
The Float Vent Valves will "close" depending on the fuel level and the aircraft's attitude. |
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How is "excess fuel" in the Surge Bay transferred back to the main tank?
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It is "siphoned" back into the main tank.
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In what area of the wing is the "Main Tank" physically located?
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From the Surge Bay it extends all the way to the aircraft's fuselage.
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What is the primary purpose of the "Main Tanks"?
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To store fuel and feed the "Collector Bays".
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What is the total "Usable Fuel" contained within the main tanks?
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Each Main Tank: 5,862 lbs
Total Capacity: 11,724 lbs |
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What is the maximum fuel imbalance limitation for the "Main Tanks"?
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600 lbs
Inflight limitation only! |
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What is the primary purpose of the "Collector Bays"?
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To provide a steady flow of fuel to the aircraft engines.
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What keeps the "Collector Bays" full of fuel?
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Scavenge Ejector Pumps located in each Main Tank continuously deliver fuel to the Collector Bays.
One-way flapper valves between the Main Tanks and Collector Bays allows for fuel flow into the Collector Bays only! |
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What supplies fuel from the Collector Bays to the engines Fuel Metering Unit (FMU)?
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Primary Ejector Pumps
Note: Primary ejectors supply "High Volume / Low Pressure" fuel! |
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What type of fuel does the Primary Ejector Pumps deliver to the FMU?
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Low Pressure / High Volume
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What is excess fuel not used by the FMU used for?
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Excess fuel from the FMU is used to provide motive flow fuel for the operation of the "Scavenge Ejectors" and the "Primary Ejector" pumps.
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How many "Auxiliary Fuel Pumps" are there?
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Two (2)
One (1) is located in each Collector Bay. |
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What is the primary purpose of the "Auxiliary Fuel Pumps"?
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They act as a backup to the "Primary Ejectors" in the event of failure.
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What is indicated if the "#1/#2 FUEL LOW PRESS" caution light illuminates?
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Failure of the "Primary Ejector". There is insufficient fuel pressure to the FMU.
Turn the respective "Auxiliary Fuel Pump" to "ON". |
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Where can fuel quantity indications be viewed?
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Engine Display
"Fuel Page" of MFD Refuel / Defuel Panel |
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If the fuel quantity data becomes invalid, how is it displayed?
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White dashes (-----) will replace the indication.
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The "Fuel Quantity Computer" uses how many probes in each main tank to measure the fuel quantity?
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There are nine (9) "Capacitance Type" probes in each main tank.
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How will the fuel quantity indications appear if a fuel imbalance occurs?
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The quantity indications will turn an "amber" color and a flashing "IMBALANCE" advisory message is displayed above the fuel legend on the MFDs.
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Where is the "Refuel / Defuel Panel" physically located on the aircraft?
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On the "Aft/Underside" of the right engine nacelle.
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How many magnasticks are there on the aircraft to measure fuel?
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Only two (2).
One in each main tank. |
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Does the magnasticks measure the fuel quantity in pounds or liters?
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Both
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At what time will the magnasticks indicate a "full" tank?
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When the fuel quantity in the respective main tank exceeds 700 gallons.
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At what time will the magnasticks indicate an "empty" tank?
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When the fuel quantity in the respective main tank drops below 100 gallons.
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What is indicated if the "#1/#2 TANK FUEL LOW" caution light illuminates?
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It indicates that the fuel quantity in the "Collector Bay" is below 350 lbs.
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Fuel temperature indications are only shown for which tank?
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The "Left Collector Bay" only!
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Engine Inlet Fuel Temperature is displayed where?
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On the bottom of the Engine Display (ED) below the fuel quantity.
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If the "Engine Inlet Fuel Temperature" falls out of the normal range how is it indicated?
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The indication will turn either an "amber" or a "red" color.
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How is the "Refuel/Defuel Panel" powered?
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By the aircraft's "Hot Battery Bus".
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By what methods may refueling be accomplished using the Refuel/Defuel Panel?
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Automatic
Manual |
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What is indicated if the "FUELING ON" caution message is displayed?
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It indicates that the "fuel door" to the Refuel/Defuel Panel is "OPEN".
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At what time will the "MASTER VALVE CLOSED" annuciator light be illuminated on the Refuel/Defuel panel?
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1. Anytime that the Refuel/Defuel panel "door" is "CLOSED", regardless of the Mode Selectors position.
2. Anytime that the rotary switch is selected to the "OFF" position. This indicates that the Fuel Shutoff Valve is "closed". |
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What will occur if the fueler leaves the rotary switch to something other than "OFF" after completing fueling?
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The fueling "Shutoff Valve" will automatically close when the fueling door is closed regardless of switch position.
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What is the "PRESELECT REFUEL" position used for on the rotary switch within the Refuel/Defuel panel?
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Automatic refueling!
Enter a preselected fuel load. |
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What is the "REFUEL" position used for on the rotary switch within the Refuel/Defuel panel?
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Manual refueling
The shutoff valve must be manually closed to stop the flow of fuel to the tank. |
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What are the steps required to "Automatic Refuel" the aircraft?
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1. Select the rotary switch to "PRESELECT REFUEL" position.
2. Select the "PRECHECK/OPEN/CLOSE" switches to the "OPEN" position. 3. Input the desired fuel quantity using the "INCR/DECR" toggle switch. NOTE: Fuel will pump into the tanks evenly until the desired quantity is reached. |
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What are the steps required to "Manually Refuel" the aircraft?
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1. Select the rotary switch to "REFUEL" position.
2. Select the "PRECHECK/OPEN/CLOSE" switches to the "OPEN" position. 3. When the desired fuel quantity is reached select the "PRECHECK/OPEN/CLOSE" switches to the "CLOSE" position to stop the fuel flow to the tanks. NOTE: When fueling in the "Manual" mode the shutoff valves will automatically "CLOSE" if the tank becomes full! |
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What is the purpose of the "INCR/DECR" switch on the Refuel/Defuel Panel?
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The switches are used to adjust the desired fuel quantity in the "PRESEL" window.
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What is the purpose of the "TEST/RESET" switch on the Refuel/Defuel Panel?
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It is used to display and clear system fault codes on the Refuel/Defuel panel.
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What does it mean if the red "MASTER VALVE POSITION" indicator light is illuminated "RED" on the Refuel/Defuel Panel?
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It indicates that the fuel shutoff valves are "CLOSED".
Refueling is not possible! |
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What does it mean if the "DUMP VALVE POSITION" indicator light is illuminated "RED" on the Refuel/Defuel Panel?
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It is an indication that the respective "Dump Valve" is "OPEN".
This allows for venting during refueling! |
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Is the "Dump Valve" manually controlled on the Refuel/Defuel panel?
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No
It will automatically "OPEN" during refueling operations. |
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What is the purpose of the "PRECHECK" position on the "PRECHECK/OPEN/CLOSE" switches?
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It is used to test the fuel system prior to fueling.
It simulates a "Full Tank" condition which will cause the "High Level Sensors" to close the individual tank shutoff valves (amber lights illuminate). |
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What is displayed when the toggle switch is selected to the "PRECHECK" position on the Refuel/Defuel panel?
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1. Simulates a "FULL" fuel tank (700 gallons).
2. The "High Level Sensor" will close the shutoff valves and illuminate the respective "FUEL SHUTOFF TANK #1/#2" indicator. |
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How is "Defueling" in the Automatic mode accomplished?
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1. Select the mode select switch to the "PRESELECT DEFUEL" position.
2. Select the desired fuel quantity using the "INCR/DECR" toggle switch. 3. Defueling will automatically stop when the desired fuel quantity is reached. |
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How is "Defueling" in the manual mode accomplished?
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1. Select the mode select switch to the "DEFUEL" position.
2. Defueling will continue until the mode select switch is selected to the "OFF" position. |
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Will the "Auxiliary Fuel Pumps" assist in defueling the aircraft?
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Yes ... But only if 115 VAC power is available to the aircraft!
Otherwise suction is required from the fueling truck! |
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In order to "Transfer" fuel, what is required?
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115 VAC power must be available to the aircraft to operate the "Auxiliary Fuel Pumps".
Note: The AC Buses must be powered (props out of feather). |
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What controls "fuel transfer" on the aircraft?
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A 3 position toggle switch on the Fuel Control Transfer panel.
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What are the steps required to "Transfer" fuel from one tank to another?
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1. Pull up the fuel synoptic page.
2. Select the "Transfer Switch" to the desired direction of transfer. The green "ON" segment of the Auxiliary Fuel Pump switchlight will illuminate to indicate that the Aux Pump is operating. NOTE: The Auxiliary Fuel Pump will automatically activate on the "High Side" tank to transfer fuel to the "Low Side" tank. |
