Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task F. Engine Electrical Systems

AM.III.F.S5

Skill

Troubleshoot an aircraft electrical generating 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. 9-27
Chapter 9: Aircraft Electrical System › DC Generators & Controls › Generators
Troubleshooting See Figure 9-39 for a troubleshooting chart. DC Generators & Controls…
Aviation Maintenance Technician Handbook - Airframe p. 9-48
Chapter 9: Aircraft Electrical System › Small Single-Engine Aircraft › Alternator Circuit
troubleshooting an alternator system, be sure to monitor the aircraft ammeter. If the alternator system is inoperative, the ammeter gives a zero indication. In this case, the battery is being discharged. A voltmeter is also a valuable tool when troubleshooting ... alternator system. The voltmeter should be installed in the electrical system while the engine is running and the alternator operating. A system operating normally produces a voltage within the specified limits (approximately 14 volts or 28 volts depending…
Aviation Maintenance Technician Handbook - Airframe p. G-9
Glossary
engine. Contactor (electrical component). A remotely actuated, heavy-duty electrical switch. Contactors are used in an aircraft electrical system to connect the battery to the main bus. Continuity tester. A troubleshooting tool that consists of a battery, a light bulb…