Primary Flight Display Symbols
Flight Path Vector
FLIGHT PATH ANGLE - Placement of the FPV along the pitch axis indicates Flight path angle (FPA). When the FPV is on the PFD horizon line, the FPA is zero (level flight). If the FPV is above the horizon line, the airplane is climbing; below the line, the airplane is descending.
The angle of climb or descent corresponds to where the center of the FPV intersects the PFD pitch scale. FPA does not vary with speed or configuration changes. Flying the FPV onto the horizon line always produces level flight, regardless of airspeed or configuration; flying the FPV to 3° below the horizon always produces a 3° glidepath.