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  • Glossary

    aircraft installations over electric motors, because they can operate in a stalled condition without the danger of a fire. Hydraulic power pack. A small, self-contained hydraulic system that consists of a reservoir, pump, selector valves, and relief valves ... power pack is removable from the aircraft as a unit to facilitate maintenance and service. Hydraulics. The system of fluid power which transmits force through an incompressible fluid. Hydrocarbon. An organic compound that contains only carbon and hydrogen. The vast…

  • Chapter 14: Aircraft Fuel Systems › Small Single-Engine Aircraft Fuel Systems › Gravity Feed Systems

    shutoff valve or multiposition selector valve. The shutoff valve has two positions: fuel ON and fuel OFF. If installed, the selector valve provides four options: fuel shutoff to the engine; fuel feed from the right-wing tank only; fuel feed ... simplest aircraft fuel system. Downstream of the shutoff valve or selector valve, the fuel passes through a main system strainer. This often has a drain function to remove sediment and water. From there, it flows to the carburetor…

  • Chapter 8: Engine Removal & Replacement › Preparing the Engine for Removal

    feathering pump mechanism be replaced if these units are operated by engine oil pressure. Preparing the Engine for Removal Before starting to work on the aircraft or reciprocating engine, always be sure that the magneto switch ... Check to see that all fuel selectors or solenoid-operated fuel shutoff valves are closed. The fuel selector valves are either manually or solenoid operated. If solenoid-operated fuel shutoff valves are installed, it may be necessary to turn…