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  • Chapter 14: Aircraft Fuel Systems › Checking for Fuel System Contaminants › Detection of Contaminants

    Clay filter elements remove surfactants. They are used in the fuel dispensing system before fuel enters the aircraft. Contaminated fuel caused by the introduction of small quantities of the wrong type of fuel into an aircraft may not look ... contamination must be investigated. In addition to the detection methods mentioned for each type of contamination above, various field and laboratory tests can be performed on aircraft fuel to expose contamination. A common field test for water contamination is performed…

  • Chapter 14: Aircraft Fuel Systems › Checking for Fuel System Contaminants › Solid Particle Contaminants

    field hand-held test unit can be used to check the amount of anti-ice additive already in a fuel load. [Figure 14-94] Figure 14-93. A sump drain tool used to open and collect fuel and contaminants from ... fuel/water interface. High quantities of water in the fuel can also cause discrepancies in fuel quantity probe indications. Solid Particle Contaminants Solid particles that do not dissolve in the fuel are common contaminants. Dirt, rust, dust, metal particles, and just…

  • Chapter 1: Safety, Ground Operations, & Servicing › Fuel Servicing of Aircraft › Types of Fuel and Identification

    Fuel Servicing of Aircraft Types of Fuel and Identification Two types of aviation fuel in general use are aviation gasoline, also known as AVGAS, and turbine fuel, also known as JET A fuel. Aviation gasoline (AVGAS) is used in reciprocating ... engine aircraft. Currently, there are three grades of fuel in general use: 80/87, 100/130, and 100LL (low lead). A fourth grade, 115/145, is in limited use in the large reciprocating-engine aircraft. The two numbers indicate the lean mixture…