Aviation Mechanic - General, Airframe, and Powerplant › II. Airframe › Task K. Aircraft Electrical Systems

AM.II.K.S16

Skill

Troubleshoot a DC electrical system supplied by an AC electrical system.

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 - Airframe p. 9-45
Chapter 9: Aircraft Electrical System › Aircraft Electrical Systems › Small Single-Engine Aircraft
would disconnect the alternator from the bus. Figure 9-82. Schematic GCU control of the exciter field magnetism. Aircraft Electrical Systems Virtually all aircraft contain some form of an electrical system. The most basic aircraft must produce electricity for operation ... engine’s ignition system. Modern aircraft have complex electrical systems that control almost every aspect of flight. In general, electrical systems can be divided into different categories according to the function of the system. Common systems include lighting, engine starting…
Pilot's Handbook of Aeronautical Knowledge p. 7-30
Chapter 7: Aircraft Systems › Electrical System
Electrical System Most aircraft are equipped with either a 14- or a 28-volt direct current (DC) electrical system. A basic aircraft electrical system consists of the following components: Alternator/generator Battery Master/battery switch • Alternator/generator switch • Bus bar, fuses, and circuit ... breakers • Voltage regulator • Ammeter/loadmeter • Associated electrical wiring Engine-driven alternators or generators supply electric current to the electrical system. They also maintain a sufficient electrical charge in the battery. Electrical energy stored in a battery provides a source of electrical…
Helicopter Flying Handbook p. 4-16
Chapter 4: Helicopter Components, Sections, and Systems › Electrical Systems
Electrical Systems The electrical systems, in most helicopters, reflect the increased use of sophisticated avionics and other electrical accessories. [Figure 4-24] More and more operations in today’s flight environment are dependent on the aircraft’s electrical system; however ... helicopters can be safely flown without any electrical power in the event of an electrical malfunction or emergency. Helicopters have either a 14- or 28-volt, direct-current electrical system. On small, piston powered helicopters, electrical energy is supplied…