Fuel

Question 1

When you get a AMBER color on your Fuel Flow?

Answer 1

Fuel flow is greater than 5,000lbs per hour.

Fuel flow input is invalid

Question 2

Why would you a AMBER color for Fuel Quantity?

Answer 2

Fuel imbalance is greater than 800lbs
Total quantity is 900lbs or less
One wing is 450lbs or less

Question 3

When in cold condition what is a pre caution for your fuel?

Answer 3

Making sure the fuel isnt freezing
On the ground -30C
In Flight -40C

Question 4

How many fuel tanks does our a/c have?

Answer 4

4

Question 5

How much fuel is held in the MAIN(FUEL) TANKS?

Answer 5

Two tanks 4760lbs

Question 6

What direction does the center tank send fuel and how?

Answer 6

Center tanks can only send to the MAINS through trans ejectors.

Question 7

How much weight can be held in the CENTER tank?

Answer 7

4998lbs. Extended range tank.

Question 8

What is the purpose of the Collector Tanks?

Answer 8

To keep a constant fuel supply to the onside engine.

Question 9

What kind of vents are used?

Answer 9

NACA air scoops. They provide both static and dynamic venting.

Question 10

When associate with fuel, what will the MASTER WARNING light, and RH(LH) FIRE PUSH do when you deactivate the light?

Answer 10

Closes the associated fuel shutoff valve

ARMS Squib bottles.

Question 11

How many dc capacitance type probes are there?

Answer 11

6 in each wing tank, 3 in the center.

Question 12

Total fuel?

Answer 12

MAINS: 4,760lbs (2x)
CENTER:4,988lbs
TOTAL: 14,518lbs

Question 13

How many EJECTOR, ELECTRIC DRIVEN FUEL, AND ENGINE DRIVEN pumps do we have?

Answer 13

Ejector- 2 main, 2 transfer, and 2 scavenge.
Electric- 2 DC boost, 1 xflow/APU Pump
Engine- 2

Question 14

What electrical action makes the engine driven pump operate?

Answer 14

The N2 accessory drive turns the pump drive shaft.

Question 15

How is fuel temp measured?

Answer 15

After it has gone through heat exchanger(fuel/oil) and its transmitted to EICAS along with the filter status.

Question 16

Which N is controlled by Hydro mechanicals?

Answer 16

N2-releases fuel to the injectors based on the pump drive shaft speed.

Question 17

Which N is controlled by electric torque motor?

Answer 17

N1

Question 18

What is the purpose of the XFLOW/APU PUMP?

Answer 18

APU- receives fuel from this or the XFLOW NEGATIVE-G relief line.
XFLOW- turned on automatically or manually by overhead fuel.

Question 19

When will the DC BOOST PUMPS activate when armed?

Answer 19

Serves as a back-up(Batman and Robin) when a main ejector isnt working.

Question 20

What does the Fuel System Computer do?

Answer 20

AHRS, QUANTITY, DENSITY, TEMP, FUEL CONTROL PANEL.

Question 21

When will the fuel transfer be needed?

Answer 21

L or R mains are 94% of 4760.

>200lbs imbalance then 50lbs more than the original side.

Question 22

How would you change the balance of the tanks manually with using AUTOMATIC CROSSFLOW?

Answer 22

Select xflow/auto override button MAN the L or R side on the xflow to open that valve.

Question 23

At what point will your fuel be warmed up before t/o?

Answer 23

Inside the fuel pump