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When the fuel system is operating in automatic mode the center pump is automatically turned off when?
In general, when in automatic mode a pump is inhibited whenever slats are extended, whenever its associated wing tank is full (with a latch until 500kg has been burnt from the tank) or once 5 minutes have elapsed since the center tank reached low fuel level.
What are the causes common causes for ECB to initiates an automatic APU shutdown?
42. What are some of the causes for an APU automatic shutdown? Fire (on ground only), EGT overtemperature, No acceleration, low oil pressure. Fire (on ground only), underspeed, overspeed, EGT overtemperature, Reverse flow, Low oil pressure, DC power loss.
What is cross feed system in aircraft fuel system?
A system in a multiengine airplane by which fuel or oil may be transferred from engine to engine, or from tank to tank. Tank-to-tank transfer, especially from one side of an aircraft to another in a single-engine aircraft, is also referred to as cross-feed.
Why are center tank pumps deactivated on Airbus A321?
When the A321 came out Airbus made its fuel system simpler by replacing the center tank pumps with jet pumps (works with motive fuel) and put two transfer valves in the center tanks. So, in the A321 the fuel is pumped from center tank into the wing tanks which then transfer fuel into the engines.
How does the fuel system work on an A320?
With fuel in the center tank, the CTR TK MODE SEL push button selected to AUTO and the CTR TK PUMP push buttons ON (lights out), the center tank pumps: · Will operate for a short period after the first engine MASTER switch is selected ON and while slats are retracted.
Why are the center tank pumps deactivated?
When the slats are extended, the pumps are disabled to ensure that the wing tanks feed the engines rather than the center tank. The reason for this is to account for a possible tank pump failure. The tank pumps are electrically powered so there is a tiny bit of a chance of an electrical failure which can take the power off them.
What causes the center tank fuel pump to stop?
With fuel in the center tank the CTR TK MODE SEL push button selected to AUTO and CTR TK PUMP push buttons ON (lights out), which of the following conditions cause the center tank fuel pumps to stop? · Extension of the slats (after completion of the short test cycle).