| Display Selector |
| Ground Power and Bus Switching Panel with associated APU Lights and Indicators |
GEN OFF BUS (Generator Off Bus) Light
Illuminated –
IDG is not supplying power to the related transfer bus.
If the Generator is the only source of power (Ground Power or
APU Generator not on the bus), the SOURCE OFF light will also
be illuminated.
The TRANSFER BUS OFF light is not illuminated since the BUS
TRANSFER switch is in AUTO and the opposite Generator is
supplying the related Transfer Bus.
Illuminated –
IDG is not supplying power to the related transfer bus.
If the Generator is the only source of power (Ground Power or
APU Generator not on the bus), the SOURCE OFF light will also
be illuminated.
The TRANSFER BUS OFF light is not illuminated since the BUS
TRANSFER switch is in AUTO and the opposite Generator is
supplying the related Transfer Bus.
