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SYSTEMS > FUEL > Flashcards

FUEL Flashcards

1
Q

What is the purpose of the fuel breakaway valves?

A

Reduce fire hazards by sealing the cells and lines during a high-impact landing

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2
Q

What is the maximum useable capacity of internal auxiliary fuel tank?

A

100 gal

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3
Q

What, if any, is the indication that the Nitrogen Inerting Unit (NIU) has failed?

A

The indicator on the NIU Test Panel has three white triangles

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4
Q

What is the purpose of the fuel transfer system?

A

To allow for the transfer of fuel between the internal fuel cells and from the external auxiliary tanks to the internal fuel cells

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5
Q

What are the two fuel transfer modes?

A

Automatic and Operator Selectable

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6
Q

What, if any, is the indication when internal auxiliary fuel transfer is selected and fails?

A

The Advisory CTR XFER FAIL will be displayed on EUFD

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7
Q

What, if any, is the indication when the fuel transfer pump fails?

A

The Caution FUEL XFER FAIL will be displayed on EUFD

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8
Q

What is the purpose of the fuel cross feed subsystem?

A

To allow both engines to draw fuel from either internal fuel cell

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9
Q

How are the cross feed modes controlled?

A

By either operator via the MPD Fuel page

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10
Q

Why must the cross feed be in the Normal mode at all times while in flight unless executing an emergency procedure?

A

A malfunctioning cross feed shutoff valve could result in a single-engine flameout

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11
Q

During engine start, the cross feed mode for that engine is automatically set to what mode?

A

AFT

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12
Q

What, if any, is the indication that a cross feed valve did not go to the commanded position?

A

The Caution XFEED# VALVE FAIL will be displayed

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13
Q

What is the purpose of the fuel quantity subsystem?

A

To measure remaining fuel and detect low levels in the internal fuel cells

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14
Q

How is remaining fuel quantity displayed?

A

Pounds for each fuel cell and total pounds of internal fuel remaining

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15
Q

When is the AFT FUEL LOW Caution message displayed?

A

When the AFT fuel cell quantity drops below 260 lb

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16
Q

What, if any, is the indication when the internal auxiliary tank is empty?

A

The Advisory CTR TANK EMPTY will be displayed. White ā€œEā€ on center of the tank icon

17
Q

What is the purpose of the Fuel Boost Subsystem?

A

To provide pressurized fuel during engine start and when selected by operator

18
Q

When the boost pump is on, where does it draw its fuel?

A

AFT internal fuel cell

19
Q

What does the boost pump thermal relief valve do?

A

Relieves pressure buildup caused by heat expansion of the fuel in the fuel lines

20
Q

During normal flight operation, is the fuel boost pump on or off?

A

Off

21
Q

What, if any, is the indication that the boost pump has failed?

A

The Caution BOOST PUMP FAIL will be displayed on the EUFD

22
Q

What is the purpose of the auxiliary power unit (APU) fuel subsystem?

A

To provide fuel to the APU

23
Q

What is the fuel source for the APU?

A

AFT fuel cell

24
Q

What is the power source for the APU fuel boost pump?

A

24-28 VDC Electrical

25
Q

During normal flight operations, is the fuel boost pump on or off?

A

Off

26
Q

What, if any, is the indication that the APU fuel shutoff valve has failed?

A

The Advisory APU FUEL VALVE will be displayed on the EUFD

27
Q

What is the purpose of the refuel subsystem?

A

To allow for pressurized and gravity refueling of the aircraft

28
Q

What is the maximum fueling pressure for gravity refueling?

A

15 PSI

29
Q

What is the maximum fueling pressure for single-point adapter pressure refueling?

A

55 PSI

30
Q

What precaution regarding radio transmissions during hot refueling must be observed?

A

Radio transmission will be limited to emergencies only

31
Q

What Warning is associated with gravity refueling?

A

Use extreme care when venting the fuel cell to preclude venting fuel out of the filler neck

32
Q

What is the purpose of the Fuel Management page?

A

To provide displays of Fuel System status and the means to control the operation of the Fuel System

33
Q

What is the purpose of the SFR display on the TSD page?

A

To determine power settings for optimum fuel economy during cruise flight

34
Q

What is indicated when the Fire Detect/Extinguish panel ENG 1 FIRE illuminated push button is pressed and the XFEED 1 VALVE Caution is displayed on the Enhanced Up-Front Display (EUFD)?

A

The engine 1 cross feed shutoff valve failed to close

SYSTEMS (13 decks)

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