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B767 > Fuel > Flashcards

Fuel Flashcards

1
Q

How many tanks does the B767 have?

A

3 (L, R and C)

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2
Q

What indications do you have on the fuel quantity indicator?

A
  • Fuel totalizer
  • Individual tank quantity indication
  • Fuel temperature indication
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3
Q

What is the purpose of the 2 surge tanks located at each wing tip ?

A

To provide overfill containment and vent components.

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4
Q

Where is the fuel from the surge tanks drained into?

A

The center tank.

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5
Q

How are the tanks fuel pumps powered?

A

AC powered

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6
Q

What does the crossfeed system do?

A

Connects the left fuel manifold with the right fuel manifold.

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7
Q

What does the FUEL CONFIG light means?

A
  • Fuel quantity in either main tank has dropped to approx 1000kg
  • An imbalance between the main tanks > 900kg
  • There is usable fuel in the center tank with the center tank fuel pumps OFF
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8
Q

Where is the fuel temperature sensed?

A

In the left main tank.

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9
Q

From which tank(s) is the fuel dumped when using the fuel jettisoning system?

A

The center auxiliary tank.

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10
Q

How many AC-powered fuel pumps are fitted into each tank?

A

2

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11
Q

How is the fuel burn in the center tank first achieved?

A

Center tank fuel pumps have a greater output pressure than the left and right main tank fuel pumps.

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12
Q

Why are the center fuel tank pumps inhibited (PRESS light) when N2 RPM is less than 50%?

A

For load shedding

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13
Q

In case of both tank fuel pumps pressure is low, how is the associated engine fed?

A

By a suction feed line bypassing the pumps.

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14
Q

What is the maximum fuel capacity (all tanks full) ?

A

Approx 72T

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15
Q

What is each tank capacity?

A

Left: Approx. 18T
Right: Approx. 18T
Center: Approx. 36T
Total: Approx. 36T + 36T = 72T

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16
Q

By which fuel tank is the APU fed?

A

By the left tank.

17
Q

By which pump is the APU fed on the ground when AC power is available?

A

By the left forward AC fuel pump.

18
Q

By which pump is the APU fed on the ground when no AC power is available?

A

By the DC fuel pump (runs automatically).

19
Q

How much fuel is approximately jettisoned ?

A

Approx. 1200 KG/MIN

20
Q

What does the CDU message “INSUFFICIENT FUEL” mean?

A

The FMC predicted fuel at destination is less than the FMC reserves.

21
Q

What does the CDU message “FUEL DISAGREE-PROG 2” mean?

A

The fuel totalizer and the calculated fuel quantity disagree.

B767 (6 decks)

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