Aircraft Fuel System 13 Flashcards
To indicate that a refuelling bowser is carrying JET A1 aviation kerosene:
a.JET A is printed in white on a black background label positioned prominently on the vehicle.
b.yellow and black stripes are marked on the refuelling hose.
c.JET A1 would be painted in 30cm high symbols on the side of the bowser.
d.JET A1 is printed in white on a black background label positioned prominently on the vehicle.
d.JET A1 is printed in white on a black background label positioned prominently on the vehicle.
During fuel jettison, the aircraft is protected against running out of fuel by:
a.the crew remaining alert.
b.a low level float switch.
c.preset jettison quantity switches.
d.a high level float switch.
b.a low level float switch.
A power failure to a capacitive fuel contents system would cause the gauge to:
a.show full scale deflection low.
b.show full scale deflection high.
c.fluctuate between high and low.
d.remain fixed on the last contents indicated by that gauge.
a.show full scale deflection low.
The crew can monitor fuel tank temperature because:
a.because it effect the fuel burn.
b.the aircraft must not be operated with a fuel tank temperature within 5 degrees of the fuel freezing point.
c.its an accurate indication of the outside temperature.
d.because its nice to have something to look at during flight.
b.the aircraft must not be operated with a fuel tank temperature within 5 degrees of the fuel freezing point.
The tank vent system is connected to the bottom of the wing through a NACA duct that face forwards:
Select one:
True
False
True
The vent space in each fuel tank as required by CS-23 and CS-25 is 2% of the tank volume:
Select one:
True
False
True
The fuel tank booster pumps are:
a.only required in an emergency when the DC pumps fail.
b.high flow rate, low pressure, three phase AC pumps cooled by the fuel.
c.high pressure, low flow rate AC pumps.
d.DC pumps run from the DC essential bus bar.
b.high flow rate, low pressure, three phase AC pumps cooled by the fuel.
Aircraft fuel tanks are pressurised using:
a.cabin air.
b.ram air via a NACA duct located under the wing.
c.by a nitrogen generating system.
d.pneumatic air.
b.ram air via a NACA duct located under the wing.
The LP cock (LP fuel valve):
a.reduces the fuel pressure for engine fuel burn.
b.is operated by the crew to start an engine.
c.is used to shut down the engine.
d.is normally open and closed by operation of the Fire handle.
d.is normally open and closed by operation of the Fire handle.
Flash point of fuel is:
a.is not important when considering fuel volatility.
b.is only important when flying helicopters.
c.is the temperature that the fuel will keep burning if ignited.
d.the temperature that it will ignite but not remain lit if an ignition source is applied to it.
d.the temperature that it will ignite but not remain lit if an ignition source is applied to it.
The fuel in the wings is burnt:
a.after the centre tank fuel to maintain wing bending relief.
b.it doesn’t matter because there is always more fuel in another tank.
c.is burnt before the centre tank fuel to maintain wing bending relief.
d.is burnt at the same time as the centre tank to to keep all tanks equal.
a.after the centre tank fuel to maintain wing bending relief.
The term usable fuel means:
a.the fuel that can be burnt by the engines during flight.
b.is the fuel that has already been used during a flight.
c.all the fuel in the aircraft.
d.is only available during taxying.
a.the fuel that can be burnt by the engines during flight.
In the diagram below if the fuel in the left wing is greater than the fuel in the right wing, what sequence of pumps and valves would be required to balance the fuel, assuming there’s no fuel in the centre tank:
a.check all pumps are working, then switch off the pumps in the LH tank and open the cross feed valve. Once the fuel balance has been re-established reverse the procedure.
b.check all tank pumps are working, then open the cross feed valve and switch off the RH tank pumps. Once the fuel balance has been re-established, reverse the process.
c.check all main tank pumps are working, then open the cross feed valve and switch off the pumps in the RH tank. Once the fuel balance is re-established, switch on the pumps in the RH tank and close the cross feed valve.
d.open the cross feed valve and switch off all pumps.
b.check all tank pumps are working, then open the cross feed valve and switch off the RH tank pumps. Once the fuel balance has been re-established, reverse the process.
