Fuel systems Flashcards
Where can you find the correct part number for the fuel quantity sensor to be installed in an aircraft fuel tank?
In the Illustrated Parts Catalog for the aircraft.
Where are the fuel system strainers located?
One strainer is located in the outlet to the tank, and the main strainer is located in the fuel line between the outlet of the fuel tank and the inlet to the fuel metering device.
Why do the fuel strainers used on some turbine-engine aircraft have a warning device that signals the flight crew when the strainer is beginning to clog up?
Strainers clog because ice forms on the filter element. The flight crew can route the fuel through a fuel heater to melt the ice.
How does water appear in the fuel drained from the tank sumps?
Water appears as a clear globule in the bottom of the container used to collect the fuel drained from the sumps.
Why must an aircraft fuel valve have a detent in its operating mechanism?
The detent gives the pilot a positive indication by feel when the selector valve is in the full ON and full OFF position.
What must be done before a fuel selector valve can be removed from an aircraft?
The tank to which the valve is connected must be drained or otherwise isolated.
What must be done after a fuel valve is replaced?
The fuel system must be checked for leaks.
