LANDING GEAR POSITION INDICATION

The Landing gear position is indicated on the middle right side of the EICAS display as shown in the figure below. They are four types of indications which are clearly listed below.

DOWN: the green DN label inside a green circle indicates that the respective landing gear is down and locked

TRANSIT: the amber cross-hatched box indicates that the respective landing gear is in transit.

UP: the white UP label inside a white box indicates that the respective landing gear is up and locked

DISAGREEMENT: a red icon indicates a discrepancy between Landing gear lever position and the respective landing gear position. The indication changes from its previous color to red 20 seconds after the discrepancy is detected.

MFD BRAKE STATUS

MFD BRAKE STATUS
The MFD brake status page is displayed on top left side of the multi function display. It displays various parameters like brake pressure, parking brake indicator, brake temperature. 

ANTI ICING SYNOPTIC PAGE ON MFD

The anti- ice synoptic page provides a visual representation of the anti-ice system operation and parameters, and can be selected by flight crew for viewing on either MFD

1. Bleed Air System valves Status,

2. Bleed Air Temperature Indication,

3. Bleed Air Pressure Indication,

4. Wing Anti-Ice Pressure Indication,

5. Ice Condition Annunciation,

6. Anti-Ice Flow Line,

7. APU Icon.

ANTI ICING SYNOPTIC PAGE ON MFD

HYDRAULIC SYNOPTIC PAGE ON MFD

The hydraulic synoptic page provides a visual representation of the hydraulic system operation and parameters and can be selected by the flight crew for viewing on either MFD. In the event of any system failure, the size of letters inside the associated distribution box increase to attract the attention of the flight crew.

1. Pressure Indication,

2. Quantity Indication,

3. Temperature Indication,

4. Engine Pump Shut Off Value Status,

5. Electric Hydraulic Pump Status,

6. Engine Driven Hydraulic Pump Status,

7. Power Transfer Unit Status,8. Hydraulic Flow Line, 9. Hydraulic System Distribution Box.

HYDRAULIC SYNOPTIC PAGE ON MFD

FUEL SYNOPTIC PAGE ON MFD

The fuel synoptic  page provide a visual representation of  the fuel system Operation and parameters .and can be monitored  by the flight crew on either MFD.

1. Temperature Indication,

2. Jet Pump Indication,

3. Electrical Pump Status,

4. Fuel System Valves Status,

5. Fuel Tank Quantity Indication (Tank1 or Tank2),

6. Fuel Flow Line,

7. Total Fuel Quantity Indication,

8. Total Fuel Used Indication.

FUEL SYNOPTIC PAGE ON MFD

MFD LIGHNTING SENSOR

The lightening sensor is indicated on the MFD on the Horizontal profile indication page. It basically provides the intensity of the lightning’s as shown below.

1 .Rate Of Occurrence Symbols,

2. Alert Symbol,

3. Lighting Clear Function,

4. Lighting Mode,

MFD LIGHTNING SENSOR

5. Lighting Annunciation, 

MFD WEATHER RADAR

1. Weather Radar Returns,

2. Target Alert Check,

3. Rain Echo Compensation Technique Check Box,

4. Altitude Compensated Tilt Check Box,

5. Turbulence Detection Checkbox,

6. Gain Indication Display,

7. Receiver Gain Checkbox,

8. Antenna Stabilization Checkbox,

9. Sector Scan Checkbox,

10. Off Mode,

11. Standby Mode,

12. Ground Mapping Mode,

13. Radar Mode,

14. Forced Standby Override,

15. Weather Radar Annunciation

MFD WEATHER RADAR  

FLIGHT CONTROL SYNOPTIC PAGE ON MFD

The flight control synoptic page provides a visual representation of the flight control system operation and parameters and can be   selected by the flight crew for viewing on either MFD.

1. Waypoint Data block Indications,

2. FMS Source Indication,

3. Heading Readout,

4. Drift Angle Bug,

5. Wind Display,

6. Air Data System Indications,

7. DME Data Block Indications,

8. Horizontal Track line,

9. Range Selection,

10. FMS Lateral Deviation Indication,

11. FMS Progress Window,

12. Selected Heading Out Of View Arrow,

13. Selected Heading Bug,

FLIGHT CONTROL SYNOPTIC PAGE ON MFD Airbus A320

14. Way Point Display.

ELECTRICAL SYNOPTIC PAGE ON MFD

1. IDG (Integrated Drive Generator)

The IDG icon and its outputs (voltage/frequency/amperage) are always displayed, even       when readings are zero. If an output is invalid or out of range, the digits are replaced by the amperage

 GREEN: IDG available and IDG knob is selected in auto position,

WHITE: IDG available and IDG selector knob in off position or engine is not running,

AMBER DASHED: invalid information.

 2. AC External Power (AC GPU)

  APU GPU ICON:-

  GREEN: AC GPU connected and GPU button is pushed in,

  WHITE: AC GPU connected and GPU button is pushed out,

  AMBER DASHED: Invalid information.

  

AC GPU parameters:-

  GREEN: AC GPU is available and information is valid,

  AMBERDASHED: information is invalid.

3. APU

Auxiliary Power Unit (referred to as APU), A small turbine engine capable of providing compressed air to the bleed air system and AC electrical power to the electrical system. The Auxiliary power unit is most often used while parked on the ground to:-

·         Provide a sufficient volume of pressurized air to the bleed air supply system which makes it possible to operate both air conditioning packs.

·         Provide 40Kva AC electric power to the aircraft, enough to fully power the entire electrical system.

The auxiliary power unit can also be used in flight for electrical power should the airplane be dispatched with an engine-driven generator know to be inoperative.

APU icons

NOTE: Whenever EICAS caution messages APU FAIL is displayed the APU icon   will be white beneath an amber cross. 

APU parameters:

GREEN: For valid information,

AMBER DASHED: For invalid information or a value out of range.

4.  Electrical Buses

The electrical bus icons are always displayed.

BUS icons:

GREEN: energized bus,

WHITE: de-energized,

AMBER DASHED: Invalid information.

5. TRU (TRANFORMER RECTIFIER UNIT)

The TRU icons and outputs (voltage/amperage) are always displayed.

 TRU Icons:

GREEN: TRU available and the associate toggle switch in AUTO position,

WHITE: TRU available and the associate toggle switch in OFF position,

AMBER DASHED: Invalid information.

 TRUE PARAMETER:

 GREEN: For valid information,

 AMBER DASHED: For invalid information or a value out of the valid Range.                                                                                                                                                                                                                                     

 6. BATTERY

 BATTERY icons:

 GREEN: voltages are greater than 18 volts.

 WHITE: voltages are less than 18 voltages.

 AMBER DASHED: Invalid information and value out of the valid Range

 BATTERY PARAMETERS:

GREEN: for valid information

AMBER DASHED: for invalid information.

7. DC EXTERNAL POWER (DC GPU)

 DC icons:

 GREEN: DC GPU connected and available,

AMBER DASHED: for invalid information.

NOTE: A white in USE indication is displayed, centered above the DC GPU icon. Whenever                         the DC GPU providing power.

8. Electrical Flow Line

Flow line icons illustrate voltage sensing.

FLOW LINE icons:

GREEN: Voltage is sensed,

WHITE: Voltage is not sensed,

AMBER DASHED: For invalid information.

 9. RAT (Ram Air Turbines)

 RAT icons:

 GREEN: RAT is deployed and operating,

 AMBER DASHED: invalid information,

 RAT PARAMETERS:

 GREEN: for valid information,

 AMBER DASHED: for valid information or a value out of the valid Range.  

MFD DISPLAY PHILOSOPHY

MULTIFUNCTION DISPLAY

The MFD presents map and plan navigation formats and various system synoptic formats selectable by the flight crew. The MFD provide redundancy to display both the PFD and EICAS formats based upon reversion. It also has the display maintenance information. The MFD consists of menu soft keys, on the top and bottom of screen, which are used to select formats and control system.