FMS and manual speed targets

Select FMS or MAN

Switch between an appropriate FMS target and a manual target only when safe to do so.

In stable flight, display the speed tape and note the current speed-target source.

Speed-source colours

FSS describes magenta for the FMS speed target and cyan for a manually selected target.

Watch the target readout and bug colour as well as the active thrust and vertical modes.

FMA and A/T

Check the speed-selector position and actual FMA; do not infer autothrottle engagement from target colour alone.