The following instructions cover some of the basic inspections and procedures for rigging and adjusting fuel controls, fuel selectors, and fuel shutoff valves. While rigging the fuel selector, power controls, and shutoff valve linkages, follow the manufacturer’s step-by-step procedure for the particular aircraft model being rigged. The cables should be rigged with the proper tension … Read more
Energy Transformation A gas turbine engine is a form of heat engine that converts the chemical energy of fuel into heat energy. Heat energy causes an increase in gas pressure that is converted into kinetic energy in the form of a high velocity stream of air. The kinetic energy is transformed to mechanical energy as … Read more
The reciprocating engine exhaust system is fundamentally a scavenging system that collects and disposes of the high-temperature noxious gases being discharged by the engine. Its main function is to dispose of the gases with complete safety to the airframe and the occupants of the aircraft. The exhaust system can perform many useful functions, but its … Read more
Proper propeller servicing and overhaul help ensure safe operation, reliable performance, and maximum service life. This section covers cleaning, lubrication, air dome charging, overhaul, and propeller reassembly procedures. Servicing Propellers Propeller servicing includes cleaning, lubricating, and replenishing the operating lubrication supply. Cleaning Propeller Blades Aluminum and steel propeller blades and hubs are usually cleaned by … Read more
Gas turbine engine thrust is produced by accelerating a mass of air through the engine and expelling it at a higher velocity than it entered. This process follows Newton’s laws of motion, where force is directly related to mass flow and acceleration. By understanding how airflow velocity changes between the inlet and exhaust, it becomes … Read more
The following procedure is typical of those used for installing a horizontally opposed engine after the accessories are mounted on the engine. Insert engine mounting bolts into the engine mount and slide the shock mounts onto the bolts so that the flat surface of the shock mount is flush with the engine mounting pad. 1. … Read more
Aircraft powerplant electrical systems require properly installed electrical components to ensure safe, reliable, and efficient operation. Correct management of electrical loads, effective circuit protection, and the proper selection of switches and relays help prevent overloads, protect electrical wiring and equipment, and maintain dependable system performance. This section provides general procedures and safety precautions for the … Read more
Maintenance of a typical turbine engine ignition system consists primarily of inspection, testing, troubleshooting, removal, and installation of ignition system components. Inspection Inspection of the ignition system normally includes the following: Check System Operation The igniter can be checked by listening for a snapping noise as the engine begins to turn, driven by the starter. … Read more
Reliable electrical connections are essential for the safe operation of aircraft powerplant electrical systems. Proper installation of terminal lugs on terminal blocks ensures secure mechanical attachment, minimizes electrical resistance, and helps prevent loosening caused by engine vibration. The following guidance explains recommended practices for connecting terminal lugs to terminal blocks using the correct hardware arrangement … Read more
The function of a spark plug in an ignition system is to conduct a short impulse of high-voltage current through the combustion chamber wall. Within the combustion chamber, the spark plug provides an air gap across which the electrical impulse produces a spark to ignite the air-fuel mixture. Although aircraft spark plugs are relatively simple … Read more
Aviation Knowledge & Technical Study
Aero Guide provides structured aviation study materials, technical explanations, and educational resources based on FAA handbooks and other aviation references. Explore aviation fundamentals, aircraft systems, airframe structures, powerplant systems, weight and balance, and more to support your aviation learning journey.
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