FPA mode

Select path angle

Select FPA and a modest descent angle consistent with the simulated clearance.

In a stable descent practice area, show the flight-path reference when available.

FPA command

Compare the flight-path reference, vertical speed, ground speed and actual trajectory.

FSS describes FPA as an angle command, not a fixed vertical speed.

FPA and altitude

Check the selected angle, altitude preselector and aircraft response; revise the plan if the path is unsuitable.