Fuel System

Question 1

What is the capacity of the main fuel tanks?

Answer 1

4860lbs each
9720lbs total

Wing tanks. 4860# x2, 9720# total

Question 2

What is the capacity of the aux fuel tanks

?

Answer 2

7168lbs

Question 3

What is the capacity of the tail tanks?

Answer 3

3112lbs

Question 4

What is the maximum permitted lateral fuel imbalance for taxi, take off and landing?

Answer 4

400lbs

Question 5

What is the maximum permitted lateral fuel imbalance in flight?

Answer 5

800lbs

Question 6

What is the minimum amount of fuel required for a go around?

Answer 6

500lbs per wing (assuming a maximum attitude of 10 degrees nose up)

Question 7

What are the limitations when jettison?

Answer 7

Flaps must be at zero

Prohibited in known lightening conditions

Question 8

The engine driven fuel pumps are normally supplied with fuel by the?

Answer 8

Main ejectors

Question 9

If the main ejectors fail, the the engine driven fuel pumps will be supplied by the?

Answer 9

Electric boost pumps

Question 10

Fuel imbalance between the main tanks is corrected by?

Answer 10

Gravity cross flow

Question 11

The scavenge ejectors do what?

Answer 11

Provide a flow of fuel from the main tanks to the collector tanks

Question 12

Flapper valves in the main talks prevent what?

Answer 12

Reverse flow of fuel from the inboard main talk to the outboard main tank sections

Question 13

Fuel for the APU is normally supplied by?

Answer 13

An electric pump in the right main tank

Question 14

In the case of a negative G condition, fuel for the APU is supplied by?

Answer 14

The left main ejector

Question 15

The pump switch lights on the fuel control panel control the?

Answer 15

Electric boost pumps

Question 16

The preferred method of refuelling is?

Answer 16

Single point pressure refuelling

Question 17

The maximum pressure for single point refuelling is?

Answer 17

50 psi

Question 18

Never open the overwing fuel caps if the fuel quantity is unknown or if the tank contains more than?

Answer 18

4000lbs

Question 19

During flight, the maximum imbalance between main tanks is?

Answer 19

800 lbs

Question 20

To dump fuel?

Answer 20

The dump switchlight must be depressed

Question 21

The left electric pump is powered by?

Answer 21

DC BATT BUS

Question 22

The right electric pump is powered by?

Answer 22

DC BUS 2

Question 23

Overwing refuelling results in what percentage less fuel uptake?

Answer 23

7%

Question 24

Total Fuel capacity?

Answer 24

20,000lbs

Question 25

Mains capacity?

Answer 25

9720lbs

Question 26

Aux capacity?

Answer 26

7168lbs

Question 27

Tail capacity?

Answer 27

3112lbs

Question 28

FSCU stands for

Answer 28

Fuel system computer unit

Question 29

What % does the mains burn down to before the aux and tail begin burn?

Answer 29

93% (4500lbs)

Question 30

How many capacitance probes?

Answer 30

17 | 6 per wing, 4 aux, 1 tail

Question 31

AUTO TAIL XFER INHIB means?

Answer 31

Rotor burst shroud has released nitrogen (real issue, do not override)

Question 32

AUTO TAIL XFER means?

Answer 32

Failure of the FSCU - override if required

Question 33

Talk tank transfer pump/hr?

Answer 33

1800lbs (900 without SB)

Question 34

Fuel dump figure per minute?

Answer 34

100-120lbs

Question 35

Limitation of fuel dump?

Answer 35

Flap up, no lightening

Question 36

Max fuel imbalance?

Answer 36

400lbs for taxi, take off and landing, 800lbs inflight | 800lbs in flight

Question 37

FUEL XFLOW SOV OPEN EICAS message when?

Answer 37

Fuel imbalance less than 100lbs and after a 50second delay

Question 38

Max refuel pressure?

Answer 38

55 psi

Question 39

Defuel suction?

Answer 39

-8 psi

Question 40

Max structural fuel imbalance?

Answer 40

2500lbs | Fuel loading left vs. right tanks

Question 41

Main tank primary fuel display turns amber when?

Answer 41

Imbalance or <500lbs

Question 42

Tail tanks primary fuel display turns amber when?

Answer 42

Tail/aux heavy

Question 43

Aux tank primary fuel display turns white when?

Answer 43

<10lbs

Question 44

Main fuel primary display turns amber when?

Answer 44

<1000lbs

Question 45

Bulk fuel limitation?

Answer 45

-37 degrees

Question 46

Engine fuel temp limitation

Answer 46

5 degrees - cannot take off below

Question 47

Take off with up to 500lbs in the aux tank is permitted provided there is what in the main tanks?

Answer 47

1500lbs min

Question 48

Take off with more than 500lbs in the aux tanks provided?

Answer 48

There is at least 1500lbs in the mains - if you want more in the aux you must follow the table

Question 49

Minimum fuel quantity for a go around?

Answer 49

500lbs per wing provided you do not exceed >10 degrees nose up

Question 50

Aux tank quantity must be what multiplied by tail tank?

Answer 50

2.65

Question 51

How many tanks in the tail?

Answer 51

Three (3) One Tail Cone Two saddle tanks

Question 52

ROT Fuel Flows?

Answer 52

2,500 lb/hr -- hour One 2,000 lb/hr -- hour two+

Question 53

What could happen if pressure fueling is interrupted?

Answer 53

Aux tank may stop filling prior to top off. Could require manual refueling.

Question 54

Which fuel tank directly fees the engines?

Answer 54

Collector tanks

Question 55

How can you cross-feed fuel between the mains/wings?

Answer 55

GRAVITY XFLOW switch

Question 56

Can you gravity fuel the tail tank?

Answer 56

No. Pressure fueling only

Question 57

Which Fuel tanks can be dumped?

Answer 57

Tail tanks only

Question 58

What is the sequence of fuel transfer in flight?

Answer 58

MAINS to 93%, then... AUX to MAINS, then... TAIL to AUX

Question 59

How is a fuel imbalance corrected?

Answer 59

Transfer L or R TO AUX

Question 60

What is the purpose of the 2 electric boost pumps?

Answer 60

Backup the two main ejector pumps.

Question 61

What will cause a boost pump to run?

Answer 61

Motive flow failure or low pressure

Question 62

Why is "bulk" fuel temp taken from the left wing only?

Answer 62

Right wing gets return fuel that has been used to cool APU Gen adapter oil.

Question 63

Fuel from the collector tanks is supplied to each engine-driven high pressure pump by...

Answer 63

Main ejector pumps, or electrical boost pumps

Question 64

The AUX Tank system consists of...

Answer 64

* Center * Forward * Aft tanks

Question 65

The OVERRIDE switch on the FUEL/DEFUEL panel allows individual fueling of ...

Answer 65

AUX or TAIL tanks

Question 66

Takeoff with up to 500 lbs in the AUX tank is permitted, provided...

Answer 66

there is 1500 lbs in each wing tank.

Question 67

Is fuel cross-flow permitted during takeoff? Landing?

Answer 67

* Takeoff -- NO * Landing -- YES