6320 Eng Start, Control and Fuel Systems Revision 1

Name the pump:

Used to feed the engines. Used to keep pressure in the fuel lines above atmospheric pressure. Prevents airlocks from forming and ensuring a steady supply of fuel is available.

• Jet Pump

• Booster Pump

• Scavenge Pump

• Jettison Pump

With reference to a float switch assembly fitted into an aircraft fuel tank:

At what percentage level will fuel transfer automatically start?

• 100%

• 17%

• 85%

• 80%

Select one or more of the statements below which meet the requirements of an aircraft fuel system

• To meet operational requirement, it is necessary to be able to increase the range or endurance of an aircraft

• To optimise use of fuselage space to carry sufficient quantity of fuel for the aircraft role.

• Control is maintained by sensors within the system sensing changes in fuel usage and operating valves

• To deliver fuel to the engine(s) or APU at the required flow rates and pressure under all conditions of flight

What is the purpose of a compensator unit fitted to the secondary probe

• Compensate for changes of depth of the fuel

• Compensate for changes temerature of the fuel

• Compensate for changes of Specific Gravity (density) of the fuel

• Compensate for changes in frequency of the fuel

Which of the following sensors is used to measure fuel in a fuel contents gauging system. Select one or more correct answer

• Ultrasonic Sensors

• Pressure Sensor

• Tank Unit/Probe

• Temperature sensor

Which of the following general safety precautionsare to be observed when any maintenance activity is being carried out on an aircraft fuel system.

Select one or more correct answers

• The container, into which fuel must be drained, must be of plastic construction and non conductive

• The “TWO-MAN” rule is to be observed

• Any light source can be used inside fuel tanks

• Deal with any spillages immediately using readily available spill kits

FUEL IS MEASURED IN KG's SO THAT

• A pilot can work out the cost

• It is easy to jettison

• All up weight can be calculated

• Make indication easy to process

Lifting the guard of the MASTER JETTISON SWITCH and selecting it to open will cause?

• The jettison pump relays to be energised

• The jettison valve to shut

• The yellow "open" caption to illuminate

• The jettison valve to open

Which of the following occasions would a pilot consider using the crossfeed system.

Select one or more correct answers

• Fuel is to be used from another tank

• Loadlifting

• Engine failure

• When fuel has to be jettisoned

The FEIU processes fuel quantity signals and feeds the information to:-

• The Fuel Probes

• The TSU's

• The cockpit display system

• The engines