What light illuminates in the overhead panel GPU button when the GPU is connected and on?

What light illuminates in the overhead panel GPU button when the GPU is connected and on?

• A. GPU ON
• B. GPU READY
• C. GPU AVAIL
• D. GPU ACTIVE

Answer: (C)

The light on the overhead GPU pushbutton shows whether external ground power is available to the aircraft’s electrical system. When a GPU is connected and powered, the AVAIL indicator lights to confirm that external power is ready to supply the buses and systems on the ground. This status helps you know you can draw power from the GPU instead of the aircraft’s own generators or batteries. The other labels don’t reflect the same availability status on this panel, which is why AVAIL is the correct indication.

The light on the overhead GPU pushbutton shows whether external ground power is available to the aircraft’s electrical system. When a GPU is connected and powered, the AVAIL indicator lights to confirm that external power is ready to supply the buses and systems on the ground. This status helps you know you can draw power from the GPU instead of the aircraft’s own generators or batteries. The other labels don’t reflect the same availability status on this panel, which is why AVAIL is the correct indication.