Fuel Flashcards

1
Q

When must the FUEL XFEED knob be set to off?

A

Takeoff;
Landing;
GA

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2
Q

Which MFD page provides a visual representation of the fuel system operation and parameters?

A

FUEL synoptic page.

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3
Q

What color are the total and individual tank quantities and fuel temperature indications when in the normal range?

A

Green.

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4
Q

When the total fuel quantity is displayed in red, which aural warning is played twice?

A

“FUEL”

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5
Q

Can fuel be transferred from one tank to the other?

A

No.

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6
Q

How does the crossfeed valve allow corrections in the event of a fuel load imbalance?

A

It allows both engines and/or APU to be fed by one tank.

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7
Q

Which CAS message is displayed on the EICAS when the difference between the current and expected fuel quantity is higher than 800 lbs for 5 minutes?

A

Amber FUEL LEAK SUSPECTED.

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8
Q

How many fuel pumps does each fuel tank have?

A

Main A, backup B, and two scavenge pumps.

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9
Q

What controls the main A pump when the fuel pump is in the AUTO position?

A

FADEC of the respective engine.

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10
Q

What controls the backup B pump when the fuel pump is in the AUTO position?

A

FCU.

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11
Q

List the four times when the backup B pump will be automatically commanded on when the Fuel Pump Selector is in the AUTO position?

A

– during engine start;
– APU start or run;
– fuel low pressure detection; and
– main (A) pump failure when the Fuel Pump Selector is in AUTO position.

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12
Q

When will the amber FUEL WING IMBALANCE message be displayed on the EICAS?

A

When the imbalance is higher than 510 lbs.

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13
Q

Where is the pressure refueling point and REFUELING/DEFUELING control panel located?

A

Forward of the right wing fuselage.

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14
Q

How long does the system pre-check on the REFUELING/DEFUELING panel take to verify fuel system operation?

A

10 seconds.

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15
Q

Which switch on the REFUELING/DEFUELING panel enables pressure refueling with the airplane energized by either the APU/GPU or battery power?

A

The POWER SELECTION switch.

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16
Q

What should happen if STOP REFUEL is displayed on the REFUELING/DEFUELING panel during the refueling process?

A

The process shall be halted manually by the operator (REFUELING switch to OFF position).

17
Q

Can the tanks be refueled using the gravity refuel port on the top of each wing?

A

Yes

18
Q

What are the two different methods to refuel the airplane?

A

Pressure or gravity.

19
Q

What are the two different methods that the airplane can be defueled?

A

Pressure or suction.

20
Q

Can the FWD and VRTL tanks in the Praetor 600 be refueled via gravity?

A

Yes, via refuel ports on the right hand side of each aux tank.

21
Q

How is fuel transferred from the FWD or VRTL tanks and where?

A

Automatically to both wings simultaneously.

22
Q

Can fuel be transferred between FWD and VTRL tanks?

A

No, only to the wing tanks.

23
Q

If the AUTO function of the fuel panel for the FWD/VTRL tanks fail, how do we access the remaining fuel?

A

By selecting either FWD or VTRL on the FUEL TRANSFER panel.

24
Q

When is TRANSFER operations from the FWD or VTR tanks not allowed?

A

During XFEED operation, takeoff, landing, or GA

25
Q

What is the total fuel capacity of the Legacy 450, Praetor 500, and Praetor 600?

A

Legacy 450 = 12,220
Praetor 500 = 13,146
Praetor 600 = 16,262

26
Q

What is the total usable fuel for the Legacy 450, Praetor 500, and Praetor 600?

A

Legacy 450 = 12,130
Praetor 500 = 13,058
Praetor 600 = 16,138

27
Q

What is the maximum fuel temperature for takeoff?

A

52° C.