> For the complete documentation index, see [llms.txt](https://docs.flightsim-studio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flightsim-studio.com/e-jet-series/systems-guide/main-panel/primary-flight-display-pfd/flight-path-attitude-indications.md).
# FLIGHT PATH / ATTITUDE INDICATIONS
### FLIGHT PATH VECTOR (FPV)
* Consists of a green aircraft symbol that indicates the current flight path angle in reference to the horizon line.
* FPV turns red when TCAS RA is active and the FPV is in the Avoidance Zone.
* FPV is removed when excessive pitch is exceeded.
### FLIGHT PATH VECTOR SPEED ERROR TAPE
* Green tape that rises or descends from the left wing of the FPA symbol.
* Represents the difference between the selected airspeed and the current airspeed.
* Down indicates current airspeed is less than the selected airspeed, and up indicates more.
### FLIGHT PATH VECTOR ACCELERATION POINTER
* Displayed when FD is selected and gives an analog indication of acceleration and deceleration rate along the flight path.
* Moves up for increasing values of flight path acceleration and moves down for decreasing values of flight path acceleration.
### ATTITUDE REFERENCE AIRCRAFT SYMBOL
* Aircraft symbol is centered and always points to the top of the display. The background rotates around it.
* Displayed at all times and is used with the pitch tape to reflect aircraft pitch and roll attitude in relation to the horizon line.
### HORIZON LINE
* Based on the current aircraft pitch and roll attitude.
* When the horizon line and the attitude reference aircraft symbol are overlaid, the aircraft is in a level pitch attitude.
### FLIGHT DIRECTOR GUIDANCE CUE
* Displayed as a magenta diamond with short wings.
* Fits within the flight path vector symbol.
* If pitch or roll command data is invalid, the flight director guidance cue is removed.
Flight Director automatically displays:
* TOGA button actuation
* Autopilot is activated
* Windshear detection
### PITCH LIMIT INDICATOR (PLI)
The PLI is a pitch-based cue between stick-shaker angle of attack and current airplane angle of attack. It is shown on the PFD attitude display.
**DISPLAY LOGIC**
* Airplane airborne.
* Radio altitude greater than 200 ft.
* Calibrated airspeed at or below 1.2 Vs (low-speed / high-AOA regime).
**COLORS**
* **Green** — more than 5° remaining to stick shaker.
* **Amber** — 5° or less remaining to stick shaker.
* **Red** — stick shaker is active.
The PLI is removed above the speed/AOA gate and below 200 ft RA.
###
### ROLL SCALE
* Tick marks are located every 10 degrees up to 30 degrees.
* Inverted triangles are displayed at 0 and 45 degrees of roll.
### ROLL POINTER AND SLIP/SKID INDICATION
* The triangle is the roll pointer.
* Bottom half of the roll pointer is used as a slip/skid indicator.
* Lower portion of the triangle moves left or right to show the slip or skid condition
### LOW BANK LIMIT ARC
* Helps the pilot to fly with low bank angles during turns.
### FLIGHT PATH ANGLE (FPA)
* Indicates the current flight path in reference to the horizon line
* Cyan color.