AC GPU disconnect

Select a replacement source

Park with the AC GPU in use and an APU or engine source available. ^[56]

Confirm that a replacement source is supplying the required buses, then push the AC GPU control out before disconnecting the unit.

Disconnect sequence

GPU / bus source

Watch the AC GPU indication and bus lines as the source changes.

FSS says the AC GPU pushbutton must be pushed out before the AC unit is disconnected.

Source selection

If the buses do not remain powered, restore a suitable source and check source priority and APU generator selection.