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Erj175 > Fuel > Flashcards

Fuel Flashcards

0
Q

Collector tank does?

A

Keeps fuel pumps submerged ensuring constant fuel flow

Located at wing root

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1
Q

How many fuel tanks

A

2 wing tanks

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2
Q

Surge tank does what?

A

Collects fuel that may enter vent system during wing down conditions

Located at outboard wing

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3
Q

How many water drains

A

2 in each tank

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4
Q

How many MLI’s

A

3 in each tank

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5
Q

How to reset fuel used

A

Through MCDU

Nav button
Flt sum
Del button
Lsk 2 for fuel used

Or start an engine

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6
Q

How many fuel pumps in left wing

A

Ejector
AC electric pump
3 scavenge pumps

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7
Q

How many fuel pumps in right wing

A

6

Ejector
AC electric pump
3 scavenge pumps
DC electric fuel pump

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8
Q

What is the purpose of the wing AC fuel pumps

A 
Supplies fuel to 
Onside engine during start
Cross side engine during crossfeed
APU with engines shutdown
Also a backup for main ejector
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9
Q

What powers wing AC pump 1

A

AC bus 1

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10
Q

What powers wing AC pump 2

A

AC ESS bus

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11
Q

What is the purpose of the 3 scavenge pumps

A

Maintain fuel level in the collector tanks

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12
Q

What is the purpose of the DC fuel pump. ( located in right wing tank)

A

Provides fuel for normal APU operation and engine start when AC power or AC fuel pump unavailable

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13
Q

What powers the DC electric fuel pump

A

DC ESS bus 2

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14
Q

How does manual fuel crossfeed work

A

Turn knob to low side

The high side AC pump turns on and supply’s fuel to both engines plus extra which is returned to the low side

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15
Q

Max fuel imbalance

A

794 lbs

16
Q

When if you get the fuel low level indication

A

660 lbs

17
Q

If any scavenge pump stops working the collector tank drains to make all fuel available

You could still get a fuel low level indication with less than ____ lbs of fuel in that tank

A

3970 lbs

No uncoordinated maneuvers or pitch attitudes greater than 15° up
Or down or flameout may occur

18
Q

What is “minimum fuel” level

A

2250

19
Q

What is “emergency fuel” level

A

1500

Erj175 (39 decks)

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