Before an engine is started, it is normal for the amber FAULT light in the respective Generator switch to be on.

Before an engine is started, it is normal for the amber FAULT light in the respective Generator switch to be on.

• A. True
• B. False
• C. Only after start
• D. Never on

Answer: (A)

The generator indication system is designed to show generator status before and after start. Before an engine is started, the electrical system isn’t being powered by the engines, so the generator is not online. The amber FAULT light on the Generator switch is illuminated in this prestart state to indicate that the generator is not supplying power to the buses. This is normal and expected because there is no generator output yet. When the engine starts and the generator comes online, the FAULT light should go out, confirming the generator is providing power normally. If the light stays on after start, that would point to a fault that would need investigation.

The generator indication system is designed to show generator status before and after start. Before an engine is started, the electrical system isn’t being powered by the engines, so the generator is not online. The amber FAULT light on the Generator switch is illuminated in this prestart state to indicate that the generator is not supplying power to the buses. This is normal and expected because there is no generator output yet. When the engine starts and the generator comes online, the FAULT light should go out, confirming the generator is providing power normally. If the light stays on after start, that would point to a fault that would need investigation.