GoJet CRJ700 Fuel SyStem Flashcards

1
Q

If low fuel is detected in the left engine fuel feed line, which boost pump activates

A

Left and Right both come on.

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2
Q

How do you manually transfer fuel?

A

Select XFLOW AUTO OVERRIDE to MAN and then select the XFLOW switchlight for the low side.

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3
Q

What is the maximum fuel imbalance allowed for takeoff and in flight, respectively?

A

300 lbs/800 lbs

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4
Q

What maintains fuel balance between the main tanks?

A

It is automatically controlled by a bi-directional crossflow pump.

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5
Q

The bi-directional XFLOW pump turns on and auto XFLOW begins when the fuel imbalance reached how many pounds?

A

200 pounds

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6
Q

How does center tank fuel arrive at the engine/APU

A

Transfer ejectors send it to the main tanks. Scavenge ejectors send it to the collector tanks. Main ejectors or boost pumps send it to the engines/APU.

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7
Q

All fuel tanks can be serviced by utilizing the overwing filler caps.

A

FALSE.

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8
Q

Powered crossflow can be used for takeoff if desired, but gravity crossflow cannot

A

False. Neither can be on for takeoff.

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9
Q

When will the main tank fuel quantity indications on ED2 and the fuel synoptic page turn amber?

A

Either main tank is less than 600 lbs.
Total fuel is less than 1200 lbs.
Fuel imbalance exceeds 800 lbs.

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10
Q

If the bi-directional XFLOW pump fails to turn on when the fuel imbalance reaches 200 lbs, the pilot must select gravity XFLOW to remedy the situation.

A

FALSE. Can use MAN XFLOW as well.

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11
Q

If there is a failure of motive flow, there is no way to get fuel into the collector tanks

A

FALSE. Gravity feed lines will keep the collector tanks full.

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12
Q

The minimum fuel temperature at the engine prior to takeoff is _______. Minimum bulk fuel is either____ or _____depending on the fuel being used.

A

+5 deg C

-30 or -40 deg C.

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13
Q

How are the fuel tanks vented?

A

The tanks are vented to atmosphere by two NACA scoop vents on the underside of the wings.

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14
Q

What is used to back up the main ejectors to supply fuel to the engines?

A

Two electric boost pumps

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15
Q

If a significant (more than 800 lb) imbalance condition exists between the main tanks, what message will appear on the EICAS?

A

FUEL IMBALANCE

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