AIRCRAFT DISPLAY PAGES IN PFD CIVIL AIRCRAFT

The following pages are displayed on

AFCS INDICATION 

TAKE OFF MODE ON PFD

AIR SPEED INDICATION

VERTICAL SPEED INDICATION

ALTITUDE INDICATION

ADI INDICATION

ADI INDICATION

ADI ANNUCIATION

HSI INDICATION

HSI WEATHER RADAR INDICATION

AFCS INDICATIONS ON PFD

The FMA (Flight Mode Enunciator) is displayed on the top of PFD. The FMA displays indications of auto throttle, autopilot, active AFCS channel, lateral mode and vertical mode.

The FMA Colour code for normal operation is the following:-

Magenta: FMS commands active/engaged mode.

 Green      : Non-FMS commanded active/engaged mode

 White     : armed mode

 Amber    : Alert condition

autopilot indication on pfd

 Red         : Abnormal condition

TAKEOFF MODE ON PFD

 The takeoff mode is a FD only mode and is represented by crossbars on PFD .TO mode commands the airplane to maintain a pitch attitude reference. In take off the autopilot engagement   is not   accepted and FPA mode is inhibited. Lateral mode changes are allowed.

FPA (flight path angle) indication is inhibited for 30 seconds after liftoff when takeoff using raw-data information.

Pressing the TO/GA (Take off or Go Around) button activates the TO mode. Following a landing, the TO mode can be enabled after 5 seconds on ground.

PFD Mode Take off cross Bar

AIRSPEED TAPE INDICATIONS

The below are the detailed description of air speed parameters. All the parts of the air speed indication are listed below with the following parameters. The airspeed tape indications are present on the top left side corner of the primary function display.

1. Selected Airspeed/Mach Read Out

2. Selected Air Speed Bug

3. VFS Speed

4. V2 Speed

5. Air Speed Trend Sector

6. VAC (Vertical alternating current) Speed (AC)

7. VR (rotation) Speed(R)

8. VAP (value added processor) Speed (AP)

9. VREF (approach reference) Speed (RF)

10. Ideal Flap Selection Speed (DOT)

11 V1 Speed

12. Ground Speed

13. Mach Air Speed Read Out

14. Low Speed Awareness Tape

15. Air Speed Rolling Digits

16. VMO/MMO Barber Pole

airspeed tape indication

17. Speed Digit Read Out

VERTICAL SPEED INDICATIONS

               

The Vertical Speed Indicator, abbreviated as the VSI, presents the pilot with information on how fast the aircraft climbs or descents. This is achieved by measuring how fast the ambient pressure changes and translating this as a rate of change in feet per minute. In the below figure VSI indications are given in detail. The vertical speed is displayed in analogical and digital formats on the PFD. Besides presenting the current vertical speed, the Vertical Speed Indicator (VSI) also displays target vertical speed and respective bug, set through the Flight Guidance Controller. The PFD VSI also indicates vertical direction and minimum vertical speed to be attended during evasive maneuvers, according to TCAS commands.  

Vertical Speed Indication

1. Selected Vertical Speed Direction Arrow

2. Selected Vertical Speed Read Out

3. Vertical Speed Scale

4. Selected Vertical Speed Bug

5. Vertical Speed Counter

6. Vertical Speed Readout

ALTITUDE INDICATIONS

The altitude is displayed in tape format on the PFD. The altitude tape also displays the Flight Guidance Controller preselected altitude (ASEL), respective preselected altitude bug, and altitude trending vector.

1. Altitude Tape

2. Metric Altitude Readout

3. Altitude Rolling Digit Readout

4. Barometric Correction

5. Altitude Trend Vector

6. Selected Altitude Bug

7. Selected Altitude Readout

8. Metric Selected Altitude Readout

ADI INDICATIONS AND ADI ANNUNCIATIONS

ADI (Attitude direction indicator) primary function is to display the aircraft’ current attitude. It combines the functions of many electro mechanical indicators into a single electronic display. The ADI indications are 

marked and explained below. The ADI indication is present on top of the Primary flight display.

1. Flight Path Reference Line

2. Airplane Symbol

3. Flight Path Vector Speed Error Line

4. FPA Acceleration Pointer

5. Pitch Limit Indicator

6. SLIP/SKID Indicator

7. Roll SCLAE/LOW Bank Limit Arc

8. Roll Pointer

9. Flight Path

10. Flight Director

11. ILS Glide Slope Deviation

12. FMS Vertical Deviation

13. ILS/VOR Lateral Deviation

14. FMS Lateral Deviation

15. Pitch Angle Scale

ADI

HSI INDICATIONS

Horizontal situation indicator (HSI) is a flight navigation instrument that combines the heading indicator with a CDI (course deviation indicator), in order to provide the pilot with better situational awareness of location with respect to the course line.

1. Primary Navigation Source Annunciation

2. Ground Speed Readout

3. Selected Heading Readout

4. Bearing Pointer

5. Course Selected Pointer

6. Heading Readout

7. Lateral Deviation Indicator

8. Drift Angle Bus

9. Wind Display

10. Course Select Readout

11. Chronometer Readout

12. Lateral Deviation Dots

13. Secondary Radio Tuning

14. Bearing Source Annunciation

15. Selected Heading Bug

16. Preview navigation Source Annunciation

17. Heading Source Annunciation

18. Course select Preview Pointer

19. Desired Track Readout

20. DME Data Block

21. RNP (required navigation performance) Data Block Indication

22. MCDU (multi functional control unit) Annunciation

23. Approach Sensitivity mode Annunciation

24. FMS Lateral Deviation Annunciation

25. Desired Track Pointer

26. Way Point Data Block Indication

27. Selected Heading Out Of View Arrow

HSI Indication