737 GOL > Fuel > Flashcards

Fuel Flashcards

(59 cards)

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1
Q

Each fuel tank uses two AC powered fuel pumps which are cooled and lubricated by fuel passing through the pump.

A

True.

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2
Q

Inflight, two fuel pumps LOW PRESSURE lights for the No.1 tank illuminate. What happens to the No.1 engine?

A

The No.1 engine continues to operate normally on suction feed from the No.1.

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3
Q

Center fuel tank fuel is used before main tank fuel because:

A

Center tank fuel pumps produce higher pressure than main tank pumps.

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4
Q

The Engine Fuel Shutoff valve:

A

And the spar fuel shutoff valves close whenever their respective Engine Fire Warning switch is pulled or Engine Start lever is placed to CUTOFF

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5
Q

Fuel Quantity indicators will display:

A

An ERR symbol if a malfunction occurs.

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6
Q

The center tank scavenge jet pump operates when:

A

The No.1 main fuel tank is about 1/2 full and the main tank No.1 forward pump is operating.

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7
Q

The center tank scavenge jet pump transfers remaining fuel from the center tank at a rate of approximately ____.

A

80 kg/hr (177 lbs/hr) depending upon altitude.

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8
Q

Overwing fueling receptacles exist for both main tanks.

A

False.

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9
Q

The capacity of the center fuel tank is greater than the capacity of the two main fuel tanks combined.

A

True.

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10
Q

There are CDS fuel alert for:

A

Fuel quantity low in the main tank, both center tank fuel pumps producing low or no pressure with fuel in the center tank, excessive fuel quantity difference between main tanks.

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11
Q

During cruise, both center tank fuel pumps have failed. You still have 320 kg (700 lbs) of fuel in the center tank and both main tanks are full. The Upper Display Unit will show:

A

320 kg (700 lbs) of fuel in the center tank.

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12
Q

You have 2500 kg (5500 lbs) of fuel in the No.1 main tank and 3060 kg (6750 lbs) of fuel in the No2 main tank. You will see:

A

An IMBAL indication below main tank No.1 accompanied by a Master Caution light and system annunciation for fuel.

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13
Q

Which valve connects the fuel engine manifold to the fueling manifold?

A

The Manual Defuelling valve.

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14
Q

For landing, what is the maximum fuel imbalance between No.1 and No.2 main tanks?

A

453 kg (1000 lbs).

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15
Q

In which fuel tanks are bypass valves located?

A

Both main tanks.

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16
Q

The Engine Fuel Shut Off valves:

A

Are Battery Bus powered and may be closed by the engine start lever or the respective engine fire switch.

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17
Q

What does an illuminated main tank fuel pump LOW PRESSURE light indicate?

A

Low fuel pump output pressure.

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18
Q

What is the condition of the VALVE OPEN light when the crossfeed selector is positioned OPEN and the crossfeed valve is closed?

A

Illuminated bright blue.

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19
Q

Fuel for the APU is:

A

to start and operate comes from suction fed from the No. 1tank, when the AC fuel pumps are operating comes from the left side of the fuel manifold.

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20
Q

What is the source of electrical power for the engine fuel shutoff valves?

A

Battery Bus.

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21
Q

What is the source of electrical power for the spar fuel shutoff valves?

A

Hot Battery Bus.

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22
Q

Fuel for the APU is normally supplied from the:

A

Left side of the fuel manifold.

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23
Q

The crossfeed valve when OPEN:

A

Allows fuel transfer from any tank to either engine or APU.

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24
Q

The fuel temperature indicator indicates fuel temperature in the:

25
Once the fuel scavenging process begins, it continues for the remainder of the flight.
True.
26
The accuracy of the fuel quantity indicators is plus or minus:
2,5 % of full scale reading.
27
The fuel quantity indicators are powered by:
Standby AC power.
28
The fuel measuring stick allows comparison of fuel quantity or weight as determined from measuring stick reading and fuel weight indicated by fuel quantity indicators. Reading is obtained by withdrawing measuring stick from tank and latching it magnetically to an internal float. Fuel depth is read where stick passes through wing skin.
True.
29
How many fuel measuring sticks are installed in each main tank?
Six.
30
The engine fuel manifolds are interconnected by use of the crossfeed valve. The valve is ___ motor operated from the ___.
DC & Battery bus.
31
With the Fuel LOW Alert displayed (amber):
Fuel quantity is at least less than 1000 lbs / 453 kg.
32
What is the main purpose of the FUEL DOOR SWITCH BYPASS located in the Right Wing fueling panel?
Energizes fueling panel if refueling power control relay fails.
33
The engine fuel manifolds are interconnected by use of the crossfeed valve. The valve is ____ operated from the ____
DC motor & Battery bus.
34
The FUEL TEMP indicator located on the fuel control panel displays fuel temperature. A sensor in main tank No. 1 allows monitoring of fuel temperature.The temperature indicating system uses:
AC power from XFR BUS 2.
35
The Fueling Valve Position Lights on the External Fueling Panel illuminate blue when:
Fueling valve switch is OPEN and related tank is not full.
36
A Crossfeed selector inoperative is mainly indicated by a crossfeed VALVE OPEN light remaining blue. It indicates the crossfeed valve valve position disagrees with the crossfeed selector position. If the valve is suspected closed:
Flight conditions permitting, vary thrust to maintain fuel balance. If unable to maintain acceptable balance, land as soon as possible.
37
A fuel FILTER BYPASS light illuminated indicated impending fuel filter bypass due to a contaminated filter. Erratic engine operation and flameout may occur due to fuel contamination.
True.
38
With FUEL TEMP LOW amber message displayed, fuel is approaching minimum. Boeing QRH asks to increase speed, change altitude and/or deviate to a warmer air mass to achieve a TAT equal to or higher than the fuel temperature limit (3°C / 5°F above the fuel freeze point or -43°C / -45°F whichever is higher).
TAT will increase approximately 0.5 to 0.7° C for each 0.01 Mach increase in speed. In extreme conditions, it may be necessary to descend as low as FL250.
39
The fuel LOW indication may be caused by an engine fuel leak. For indication(s) of an engine fuel leak, check:
Total fuel remaining compared to planned fuel remaining. Individual tank quantities.
40
A shut-off system is used during refuelling to:
Automatically close the fueling valve in each fuel tank when the tank is full.
41
The manual De-fueling valve is located:
Outboard of the Number 2 engine
42
To defuel No. 1 tank:
Select the No. 1 Main tank fuel pumps ON, the Crossfeed valve OPEN and the Manual Defueling valve OPEN.
43
When the APU is inoperative and no external power is available, refueling can be accomplished as follows:
Battery switch ON - Standby Power switch to BAT = the entire fuel system operate normally.
44
With failure of all generators, the center tank fuel :
Cannot be used.
45
Lateral imbalance between main tanks 1 and 2 must be scheduled to be zero. Random fuel imbalance must not exceed 453 kgs (1000 lbs):
For taxi, takeoff, flight or landing.
46
Main tanks 1 and 2 must be full if center tank contains more than 453 kgs (1000 lbs)
True.
47
When main tank fuel pump pressure is low, each engine can draw fuel from is corresponding main tank through a suction feed line that bypasses the pumps.
True.
48
Total fuel weight is displayed on the fuel quantity gauges and on the ______ pages of the CDU.
PROGRESS and PERF INIT.
49
Is there any fuel quantity measuring sticks installed in the Center tank?
Yes.
50
The engines can suction fuel from the center tank.
False.
51
For refuelling, which tank(s) have an automatic shutoff valve that closes when the tank is full?
Left and right wing tanks and center tank.
52
Maximum tank fuel temperature is:
49°C
53
Center fuel pump switches must be positioned OFF at the first indication of low pressure.
True.
54
When is the fuel CONFIG light inhibited?
When center tank fuel quantity is less than 726 kg.
55
Fuel Measuring Stick allows comparison of fuel quantity or weight as determined from measuring stick reading and fuel weight indicated by fuel quantity indicators.
Reading is obtained by withdrawing measuring stick from tank and latching it magnetically to an internal float.
56
What operates the spar fuel shutoff valve?
DC from Hot Battery Bus.
57
How many fuel measuring sticks are installed?
16.
58
An amber fuel IMBAL alert will remain displayed until the imbalance is reduced to:
91kgs.
59
Fuel Imbalance (IMBAL) alert is inhibited when airplane is on ground.
displayed when airplane is on the ground or in the air (in someairplanes, the alert is inhibited).
737 GOL
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