Autothrottle (A/T) ARM Switch
OFF –
Disengages A/T and prevents A/T engagement.
ARM –
The indicator light illuminates green when the A/T ARM switch is in
the ARM position.
Arms A/T for engagement. Magnetically held at ARM. The A/T
engages automatically when the following AFDS modes are
engaged:
- LVL CHG
- ALT ACQ
- V/S
- VNAV
- ALT HOLD
- G/S capture
- TO/GA.