Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task I. Engine Fuel and Fuel Metering Systems

AM.III.I.R5

Risk management

Handling of engine fuel control units that may contain fuel.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Powerplant p. 9-6
Chapter 9: Engine Fire Protection Systems › Engine Fire Detection Systems › Continuous-Loop Detector Systems
handle, and unlikely to suffer damage during handling for installation or removal. Fire Detection Control Unit (Fire Detection Card) The control unit for the simplest type of system typically contains the necessary electronic resistance monitoring and alarm output circuits, housed ... connector. For more sophisticated systems, control modules may be employed that contain removable control cards having circuitry for individual hazard areas, and/ or unique functions. In the most advanced applications, the detection system circuitry controls all aircraft fire protection functions…
Aviation Maintenance Technician Handbook - Powerplant p. 2-2
Chapter 2: Engine Fuel & Fuel Metering Systems › Basic Fuel System
During starting, the boost pump forces fuel through a bypass in the engine-driven pump to the metering device. Once the engine-driven pump is rotating at sufficient speed, it takes over and delivers fuel to the metering device ... specified pressure. The airframe fuel system begins with the fuel tank and ends at the engine fuel system. The engine fuel system usually includes the engine-driven pumps and the fuel metering systems. In aircraft powered with a reciprocating engine…
Aviation Maintenance Technician Handbook - Powerplant p. 2-34
Chapter 2: Engine Fuel & Fuel Metering Systems › Turbine Engine Fuel System—General Requirements › Hydromechanical/Electronic Fuel Control
Hydromechanical/Electronic Fuel Control The addition of the electronic control to the basic hydromechanical fuel control was the next step in the development of turbine engine fuel controls. Generally, this type of system used a remotely located EEC to adjust ... fuel flow. A description of a typical system is explained in the following information. The basic function of the engine fuel system is to pressurize the fuel, meter fuel flow, and deliver atomized fuel to the combustion section…