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  • Chapter 2: Engine Fuel & Fuel Metering Systems › Fuel Control Maintenance › Fuel System Operation

    Water Injection System Fuel Control Maintenance Fuel System Operation The fuel pump receives fuel from the airplane fuel system. The low pressure boost stage of the pump pressurizes the fuel and sends it to the fuel/oil cooler (FOC). The fuel ... flows from the FOC, through the fuel pump filter element, and then to the high pressure main stage of the pump. The high pressure main stage increases the fuel pressure and sends it to the fuel metering unit…

  • Chapter 14: Aircraft Fuel Systems › Fuel System Indicators › Fuel Quantity Indicating Systems

    Fuel System Indicators Aircraft fuel systems utilize various indicators. All systems are required to have some sort of fuel quantity indicator. Fuel flow, pressure, and temperature are monitored on many aircraft. Valve position indicators and various warning lights and annunciations ... also used. Fuel Quantity Indicating Systems All aircraft fuel systems must have some form of fuel quantity indicator. These devices vary widely depending on the complexity of the fuel system and the aircraft on which they are installed. Simple indicators…

  • Chapter 14: Aircraft Fuel Systems › Aircraft Fuel Systems › Helicopter Fuel Systems

    fuel pressure warning lights are also common on jet transport aircraft. The sensors for these are located in the boost pump outlet line. They give an indication of possible boost pump failure. Fuel quantity gauges are important features ... aircraft. Indications exist for all tanks on a transport category aircraft. Often, these use a capacitance type fuel quantity indication system and a fuel totalizer as is discussed later in this chapter. The location of fuel instrumentation varies depending…

  • Chapter 14: Aircraft Fuel Systems › Aircraft Fuel Systems › Jet Transport Aircraft Fuel Systems

    fuel pressure warning light tapped in downstream of the engine-driven fuel pump alerts the crew should fuel pressure decline. Not all large, old aircraft have this fuel system. This is merely an example. Other aircraft share similar features ... possess unique features of their own. The same is true for small reciprocating-engine aircraft. There are many systems that share features with those described above, but they also differ in some ways. Always consult the manufacturer’s data when…