Flashcards in 757 Fuel Deck (14):
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
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.
Can centre tank fuel be used with no ac power?
No it is trapped and cannot be used.
HDG powers which fuel pump?
Left centre tank fuel pump.
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.
What does the valve light mean on the xfeed?
Does not agree with switch position.
When does the fuel left in the centre tank get scavenged
Scavenge system works when the wing tanks are half full.
What fuel cannot be used?
JP 4/ jet B fuel
Fuel temp is measured from which tank?
Minimum fuel temp?
-45c or 3c above freezing
Max fuel temp?
Blank indication on fuel quantity means?
Failure of the sensing system or no power .
Where does the fuel from surge tank go?
Returns to respective tank