Additional 400 Questions Flashcards
-400 Fuel Capacities (lbs)
Center 15,497
Tank 1 - 10,043
Tank 2 - 10,043
Total - 35,583
What can suction pump from the center tank?
None.
Not Left/Right Engine or APU
MAX IMBALANCE
RANDOM IMBALANCE
MAX IMBALANCE Must be scheduled to ZERO.
RANDOM IMBALANCE Must not exceed 1000 lbs. (473 kgs)
How many AC powered fuel pumps are installed for each tank?
Two
Can Tank 2 provide fuel to the APU?
yes, if the crossfeed valve is open
What pumps are powered
One pump for each tank is powered by Left AC
One pump for each tank is powered by Right AC
What happens to the fuel system with a loss of all AC power.
bypass valves allow for the engine driven fuel pumps to suction fuel to their respective engines.
There are no bypass valves in the center tank, and suction feed is not possible.
What do the one way check valves aid in.
Protects from any fuel flow pressure that could back flow through the pump.
How does the center tank valve get used first?
Center tank check valves will open at a lower pressure than the main tank check valves.
Therefore, the center tank fuel will be used first by the engines and APU (before main tank fuel), when all boost pumps are operating.
With a loss of the Left AC Electrical system, how many pumps will be operable for each fuel tank?
One
With a loss of all normal Electrical power, can the engines suction feed from the Center Tank?
No
With all 6 Fuel pumps operating, the engines will be receiving fuel from ____________________.
The center tank
All Fuel Tank Boost pumps are powered by __________________.
Normal AC Power
