757 Fuel Flashcards Preview

DHL > 757 Fuel > Flashcards

Flashcards in 757 Fuel Deck (14):
1

Fuel config .when does this come on?

Imbalance 800 kgs
Low quantity 1000 kgs
Centre tank pumps off but fuel in centre tank more than 600 kgs

2

What pressure do the centre tank pumps have compared to wing tanks?

Twice the pressure therefore they override and centre tank fuel is used first.

3

Can centre tank fuel be used with no ac power?

No it is trapped and cannot be used.

4

HDG powers which fuel pump?

Left centre tank fuel pump.

5

Can fuel be used out of wing tanks if ac power failure?

Yes thru bypass valves in Wing tanks. Engine driven pumps suck via these.

6

What does the valve light mean on the xfeed?

Does not agree with switch position.

7

When does the fuel left in the centre tank get scavenged

Scavenge system works when the wing tanks are half full.

8

What fuel cannot be used?

JP 4/ jet B fuel

9

Fuel temp is measured from which tank?

Right main.

10

Minimum fuel temp?

-45c or 3c above freezing

11

Max fuel temp?

49c

12

Blank indication on fuel quantity means?

Failure of the sensing system or no power .

13

Where does the fuel from surge tank go?

Returns to respective tank

14

Fuel capacity

6.6 and 21 tonne