ON:
-Engages the associated elevator and aileron computer.

OFF:
-Disengages associated computer.

FAULT Light:
-Illuminates amber, when a failure is detected or during ELAC power up test.

ON:
-Engages the associated spoiler and elevator and aileron computer.

OFF:
-Disengages associated computer.

FAULT Light:
-Illuminates amber when a failure is detected.

ON:
-Engages the associated spoiler and elevator and aileron computer.

OFF:
-Disengages associated computer.

FAULT Light:
-Illuminates amber when a failure is detected.

ON:
-Engages the associated flight augmentation computer.

OFF:
-Disengages associated computer.

FAULT Light:
-Illuminates amber when a failure is detected.