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C-17 > Fuel > Flashcards

Fuel Flashcards

1
Q

W/o ER Total fuel

ER Total fuel

A

180,800 lbs

244,600 lbs

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2
Q

Gravity/suction feed capability

A

Up to 10,000 ft with all engines in MAX

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3
Q

When are transfer pumps uncovered?

A

O/b. 12,000 lbs

I/b 28,000 lbs

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4
Q

ER. When is auto transfer inhibited?

A

When the associated FILL valve is open.

When the FIRE handle is pulled.

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5
Q

What fuel state generates FUEL QTY X on WAP?

LOW FUEL?

A

4,000 lbs

16,000 lbs on totalizer

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6
Q

Why do we check the FUEL QTY CHAN SEL?

A

Because a single channel failure is not indicated unless the selector switch is moved to the failed channel.

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7
Q

What’s the difference between fuel management and scheduling?

A

Management is inboard to outboard tanks.

Scheduling is aft inboard to forward inboard.

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8
Q

If Fuel has to gravity feed from the ER tanks, how much fuel is trapped in each of the four ER tanks?

A

1,000 lbs

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9
Q

Max fuel dump rate?

A

6,700 lbs per min.

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10
Q

Fuel dump altitude restriction?

A

Fuel dump above 20,000 feet may cause engine flameout due to loss of fuel pressure.

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11
Q

What hydraulic system powers OBIGGS?

A

2 for left compressor

3 for right compressor

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12
Q

How do you determine OBIGGS vs. OBIGGSII?

A

OBIGGS. Inert to alt

OBIGGSII. Time to inert.

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13
Q

How to charge OBIGGS from the APU?

A

APU SOV open

APU SUPPLY Sw at mx monitor panel open

OBIGGS On

L and R Packs On

AUX pumps 2 & 3 On.

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14
Q

Does the APU SUPPLY switch on the mx mon panel effect OBIGGS charging if the engines are running?

A

Yes, neither will charge in this config.

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15
Q

How can you see OBIGGS pressure?

A

Press the OBIGGS PRESS button on the mx mon pnl.

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16
Q

Charge OBIGGS in flt when flt time exceeds ___ hrs. Sufficient for descents greater than ______ feet.

A

3

20,000

17
Q

How does OBIGGSII inert?

A

NEA is generated by venting O2 overboard.

18
Q

Bad OBIGGSII faults?

A 
WCC OBG RIU
WCC OBG SOV L
WCC OBG SOV R
WCC OBGOTMP L
WCC OBGOTMP R
19
Q

Allowable fuel imbalance between wings?

A

8000 pounds

C-17 (13 decks)

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