DOC AIRBUS | AMM A320FSYSTEM DISPLAY - HYD PAGE - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. HYD Page
The HYD Page is described in the following figure with its 16 parameters as follows:
SD - HYD Page: Display of the 16 Parameters ** ON A/C NOT FOR ALL
SD - HYD Page: Display of the 16 Parameters ** ON A/C NOT FOR ALL
Item 1: Hydraulic system identification (green)
Item 2: Hydraulic system identification (blue)
Item 3: Hydraulic system identification (yellow)
Item 4: Yellow hydraulic system pressure
Item 5: Yellow elect pump (may be OVHT)
Item 6: Yellow ENG pump
Item 7: Yellow fire valve
Item 8: Yellow reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 9: Blue reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 10: Blue elec pump
Item 11: Green reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 12: Green fire valve
Item 13: Green ENG pump
Item 14: Ram air turbine
Item 15: Blue hydraulic system pressure
Item 16: Green hydraulic system pressure
The symbols related to these indications are described hereafter:
The HYD Page is described in the following figure with its 16 parameters as follows:
SD - HYD Page: Display of the 16 Parameters ** ON A/C NOT FOR ALL SD - HYD Page: Display of the 16 Parameters ** ON A/C NOT FOR ALL Item 2: Hydraulic system identification (blue)
Item 3: Hydraulic system identification (yellow)
Item 4: Yellow hydraulic system pressure
Item 5: Yellow elect pump (may be OVHT)
Item 6: Yellow ENG pump
Item 7: Yellow fire valve
Item 8: Yellow reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 9: Blue reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 10: Blue elec pump
Item 11: Green reservoir (may be LO lEVEL, LO AIR PRESS or OVHT)
Item 12: Green fire valve
Item 13: Green ENG pump
Item 14: Ram air turbine
Item 15: Blue hydraulic system pressure
Item 16: Green hydraulic system pressure
The symbols related to these indications are described hereafter:
A. Green Hydraulic system status
(item 1)
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL
Item 1)
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL
(item 1)
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL (1) Case 1
GREEN is normally displayed in white with the arrow displayed in green.
This is also the case when the low pressure status from the FWC is transmitted as invalid.
GREEN is normally displayed in white with the arrow displayed in green.
This is also the case when the low pressure status from the FWC is transmitted as invalid.
(2) Case 1
GREEN is normally displayed in white with the arrow displayed in green.
This is also the case when the low pressure status from the FWC, and also the pressure value from the SDAC, are transmitted as invalid.
GREEN is normally displayed in white with the arrow displayed in green.
This is also the case when the low pressure status from the FWC, and also the pressure value from the SDAC, are transmitted as invalid.
(3) Case 2
GREEN and the arrow are displayed in amber in case of hydraulic low pressure.
GREEN and the arrow are displayed in amber in case of hydraulic low pressure.
B. Blue Hydraulic system status
(item 2)
(refer to the GREEN system where the processing is the same).
(item 2)
(refer to the GREEN system where the processing is the same).
C. Yellow Hydraulic system status
(item 3)
(refer to the GREEN system where the processing is the same).
(item 3)
(refer to the GREEN system where the processing is the same).
D. Yellow hydraulic pressure
(item 4)
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL
(item 4)
HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: HYDRAULIC SYSTEM STATUS and HYDRAULIC PRESSURE ** ON A/C NOT FOR ALL (1) Case 1
The value of the related pressure is normally displayed in green.
The value of the related pressure is normally displayed in green.
(2) Case 2
The pressure is displayed in amber when its value is below 1450 psi.
The pressure is displayed in amber when its value is below 1450 psi.
(3) Case 3
The pressure is set to 0 psi and displayed in amber when its value is below 100 psi.
The pressure is set to 0 psi and displayed in amber when its value is below 100 psi.
(4) Case 4
The pressure is replaced by amber XX when its value is not available from the SDAC.
The pressure is replaced by amber XX when its value is not available from the SDAC.
E. Yellow electrucal pump
(Item 5)
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL
(Item 5)
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL (1) Case 1
The triangle is displayed in green when the yellow elec pump is on, and there is no low pressure.
The triangle is displayed in green when the yellow elec pump is on, and there is no low pressure.
(2) Case 2
The triangle is displayed in white (outline only) when the yellow elec pump is off.
The triangle is displayed in white (outline only) when the yellow elec pump is off.
(3) Case 3
The triangle is displayed in amber when the yellow elec pump is on and the pressure is below 1450 psi.
The triangle is displayed in amber when the yellow elec pump is on and the pressure is below 1450 psi.
(4) Case 4
The triangle is replaced by amber XX when the yellow elec pump status is not available from the SDAC.
The triangle is replaced by amber XX when the yellow elec pump status is not available from the SDAC.
F. ELEC indication
ELEC is normally displayed in white, it is also diplayed in white when the AC BUS 2 and the DC BUS 2 status are not available from the SDAC.
It is displayed in amber when the AC BUS 2 is OFF or when the DC BUS 2 is OFF.
ELEC is normally displayed in white, it is also diplayed in white when the AC BUS 2 and the DC BUS 2 status are not available from the SDAC.
It is displayed in amber when the AC BUS 2 is OFF or when the DC BUS 2 is OFF.
G. OVHT indication
OVHT is displayed in amber when there is an ELEC pump overheat as transmitted by the SDAC. It is not displayed when there is no overheat or when the information is not available from the SDAC.
OVHT is displayed in amber when there is an ELEC pump overheat as transmitted by the SDAC. It is not displayed when there is no overheat or when the information is not available from the SDAC.
H. Yellow ENG pump
(Item 6)
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL
(Item 6)
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL (1) Case 1
The pump is normally displayed running and green.
The pump is normally displayed running and green.
(2) Case 2
The pump is displayed not running and amber when the pump is off.
The pump is displayed not running and amber when the pump is off.
(3) Case 3
The pump status is replaced by LO when the pump is on and there is a low pressure.
The pump status is replaced by LO when the pump is on and there is a low pressure.
(4) Case 4
The pump is replaced by amber XX when the pump status is not available from the SDAC.
The pump is replaced by amber XX when the pump status is not available from the SDAC.
I. Yellow fire valve
(Item 7)
(Item 7)
(1) The valve is normally displayed open and green.
(2) It is displayed closed and amber when the fire valve is fully closed.
(3) It is replaced by amber XX when the valve status is not available from the SDAC.
J. Yellow reservoir level
(Item 8)
HYD Page - Display of the Parameters: FLUID LEVEL ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: FLUID LEVEL ** ON A/C NOT FOR ALL
(Item 8)
HYD Page - Display of the Parameters: FLUID LEVEL ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: FLUID LEVEL ** ON A/C NOT FOR ALL (1) Index: item (A)
A movable index represents the fluid level.
The index is normally displayed in white. It is displayed in amber when the fluid level is below 3.5 litre.
It is replaced by amber XX when the fluid level is not available from the SDAC.
A movable index represents the fluid level.
The index is normally displayed in white. It is displayed in amber when the fluid level is below 3.5 litre.
It is replaced by amber XX when the fluid level is not available from the SDAC.
(2) Index: item (A)
A movable index represents the fluid level.
The index is normally displayed in green. It is displayed in amber when the fluid level is below 3.5 litre.
It is replaced by amber XX when the fluid level is not available from the SDAC.
A movable index represents the fluid level.
The index is normally displayed in green. It is displayed in amber when the fluid level is below 3.5 litre.
It is replaced by amber XX when the fluid level is not available from the SDAC.
(3) Low level area (item B)
The low level area is displayed in amber.
The low level limit is 3 litres for the yellow and the green reservoir.
The low level limit is 2 litres for the blue reservoir.
The low level area is displayed in amber.
The low level limit is 3 litres for the yellow and the green reservoir.
The low level limit is 2 litres for the blue reservoir.
(4) Low level area (item B)
The low level area is displayed in amber.
The low level limit is 3.5 litres for the yellow and the green reservoir.
The low level limit is 2.4 litres for the blue reservoir.
The low level area is displayed in amber.
The low level limit is 3.5 litres for the yellow and the green reservoir.
The low level limit is 2.4 litres for the blue reservoir.
(5) Normal filling level (item C)
(a) Yellow reservoir
The normal filling level is 11.2 litre inside a margin of 2.5 litre. It is displayed in green.
The normal filling level is 11.2 litre inside a margin of 2.5 litre. It is displayed in green.
(b) Green reservoir
The normal filling level is 13.2 litre inside a margin of 2.5 litre. It is displayed in green.
The normal filling level is 13.2 litre inside a margin of 2.5 litre. It is displayed in green.
(c) Blue reservoir
The normal filling level is 5.7 litre inside a margin of 1.5 litre. It is displayed in green.
The normal filling level is 5.7 litre inside a margin of 1.5 litre. It is displayed in green.
(6) Normal filling indication (item C)
The normal filling indication has the shape of a square bracket with the center aligned on the normal filling reference-point. You cannot see the normal filling reference-point on the HYD page. This point obeys a linear law and moves in the normal filling range in relation to the reservoir temperature.
The normal filling indication is shown in white when the reservoir temperature information is not correct or when the quantity is not correct.
The normal filling indication has the shape of a square bracket with the center aligned on the normal filling reference-point. You cannot see the normal filling reference-point on the HYD page. This point obeys a linear law and moves in the normal filling range in relation to the reservoir temperature.
The normal filling indication is shown in white when the reservoir temperature information is not correct or when the quantity is not correct.
(a) Yellow reservoir
For example, at a temperature of 20 degrees Celsius, the normal filling level is 12 liters with a normal filling reference-range from 10.65 to 13.02 liters. It is shown in green.
For example, at a temperature of 20 degrees Celsius, the normal filling level is 12 liters with a normal filling reference-range from 10.65 to 13.02 liters. It is shown in green.
(b) Green reservoir
For example, at a temperature of 20 degrees Celsius, the normal filling level is 14 liters with a normal filling reference-range from 11.34 to 16 liters. It is shown in green.
For example, at a temperature of 20 degrees Celsius, the normal filling level is 14 liters with a normal filling reference-range from 11.34 to 16 liters. It is shown in green.
(c) Blue reservoir
For example, at a temperature of 20 degrees Celsius, the normal filling level is 6 liters with a normal filling reference-range from 5.37 to 6.47 liters. It is shown in green.
For example, at a temperature of 20 degrees Celsius, the normal filling level is 6 liters with a normal filling reference-range from 5.37 to 6.47 liters. It is shown in green.
(7) Fluid level scale: item (D)
The fluid level is normally displayed in white. It is displayed in amber when the related index is amber.
Maximum fluid level
The fluid level is normally displayed in white. It is displayed in amber when the related index is amber.
Maximum fluid level
(a) Yellow reservoir
The maximum level is 15.625 litre
The maximum level is 15.625 litre
(b) Blue reservoir (item 9)
The maximum level is 8.125 litre
The maximum level is 8.125 litre
(c) Green reservoir (item 11)
The maximum level is 18.125 litre
The maximum level is 18.125 litre
(8) LO AIR PRESS indication (item E)
This indication is displayed in amber when there is a reservoir low air press transmitted by the SDAC. Nothing is displayed when there is no low press or when the information is not available from the SDAC.
This indication is displayed in amber when there is a reservoir low air press transmitted by the SDAC. Nothing is displayed when there is no low press or when the information is not available from the SDAC.
(9) OVHT indication (item F)
This indication is displayed in amber when the temperature of the reservoir is higher than 92°C.
Nothing is displayed when the temperature is lower than 88°C or when the temperature value is not available from the SDAC.
This indication is displayed in amber when the temperature of the reservoir is higher than 92°C.
Nothing is displayed when the temperature is lower than 88°C or when the temperature value is not available from the SDAC.
K. BLUE ELEC Pump (item 10).
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL (1) Case 1
The pump is normally displayed in green when the pump is not OFF and when there is no LO PRESS.
The pump is normally displayed in green when the pump is not OFF and when there is no LO PRESS.
(2) Case 2
The pump is displayed in amber when it is OFF.
The pump is displayed in amber when it is OFF.
(3) Case 3
The pump is replaced by an amber LO when the pump is ON and ther is a LO PRESS.
The pump is replaced by an amber LO when the pump is ON and ther is a LO PRESS.
(4) Case 4
The pump is replaced by amber XX in all the other cases.
The pump is replaced by amber XX in all the other cases.
L. Green fire valve (item 12)
(1) The valve is normally displayed open and green
(2) The valve is displayed closed and amber when the valve is fully closed.
(3) The valve is replaced by amber XX when the valve status is not available from the SDAC.
M. GREEN Pump (item 13).
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL
Refer to item 6
HYD Page - Display of the Parameters: HYDRAULIC PUMPS ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: HYDRAULIC PUMPs ** ON A/C NOT FOR ALL N. RAT link to the BLUE system (item 14)
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL
HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL HYD Page - Display of the Parameters: YELLOW ELEC PUMP and RAT OPERATION ** ON A/C NOT FOR ALL (1) Case 1
The link is displayed in green when the RAT is not fully stowed.
The link is displayed in green when the RAT is not fully stowed.
(2) Case 2
The triangle is white when the RAT is fully stowed with no residual pressure in the retraction jack.
The triangle is white when the RAT is fully stowed with no residual pressure in the retraction jack.
(3) Case 3
The triangle is amber when there is a residual pressure in the retraction jack.
The triangle is amber when there is a residual pressure in the retraction jack.
(4) Case 4
The triangle is replaced by amber XX when the RAT status is not available from the SDAC.
The triangle is replaced by amber XX when the RAT status is not available from the SDAC.
O. BLUE hydraulic pressure (item 15)
Refer to the yellow hydraulic pressure (item 4)
Refer to the yellow hydraulic pressure (item 4)
P. GREEN hydraulic pressure (item 16)
Refer to the yellow hydraulic pressure (item 4)
Refer to the yellow hydraulic pressure (item 4)
Q. Hydraulic links
HYD Page - Display of the 10 hydraulic links ** ON A/C NOT FOR ALL
HYD Page - Display of the 10 hydraulic links ** ON A/C NOT FOR ALL
HYD Page - Display of the 10 hydraulic links ** ON A/C NOT FOR ALL HYD Page - Display of the 10 hydraulic links ** ON A/C NOT FOR ALL (1) Link to the green hydraulic system (link item 1)
This link is normally displayed in green. It is displayed in amber when the green pressure is lower than 1450 psi. When the pressure is not available from the SDAC the link is green.
This link is normally displayed in green. It is displayed in amber when the green pressure is lower than 1450 psi. When the pressure is not available from the SDAC the link is green.
(2) Link to the blue hydraulic system (link item 2)
This link is normally displayed in green. It is displayed in amber when the blue pressure is lower than 1450 psi. When the pressure is not available from the SDAC the link is green.
This link is normally displayed in green. It is displayed in amber when the blue pressure is lower than 1450 psi. When the pressure is not available from the SDAC the link is green.
(3) Link from the PTU to the green system (link item 3)
(a) Case 1
This link is normally displayed in green, directed toward the green system (outline only) when all the following cases are not valid.
This link is normally displayed in green, directed toward the green system (outline only) when all the following cases are not valid.
(b) Case 2
It is displayed in amber, directed toward the green system (outline only) when there is a PTU fault (transmitted by the FWC), or when the PTU valve is commanded OFF.
It is displayed in amber, directed toward the green system (outline only) when there is a PTU fault (transmitted by the FWC), or when the PTU valve is commanded OFF.
(c) Case 3
It is displayed in green, directed toward the green system (plain) when there is a green engine pump low pressure.
It is displayed in green, directed toward the green system (plain) when there is a green engine pump low pressure.
(d) Case 4
It is displayed in amber, directed toward the green system (plain) when there is a green engine pump low pressure together with a PTU fault.
It is displayed in amber, directed toward the green system (plain) when there is a green engine pump low pressure together with a PTU fault.
(e) Case 5
It is displayed in green, directed toward the yellow system (plain) when there is a yellow engine pump low pressure.
It is displayed in green, directed toward the yellow system (plain) when there is a yellow engine pump low pressure.
(f) Case 6
It is displayed in amber, directed toward the yellow system (plain) when there is a yellow engine pump low pressure together with a PTU fault.
It is displayed in amber, directed toward the yellow system (plain) when there is a yellow engine pump low pressure together with a PTU fault.
(4) Item 4
Link to the yellow hydraulic system.
This link is normally displayed in green. It is displayed in amber when the yellow pressure is below 1450 psi as transmitted by the SDAC.
Link to the yellow hydraulic system.
This link is normally displayed in green. It is displayed in amber when the yellow pressure is below 1450 psi as transmitted by the SDAC.
(5) Item 5
Link from the ELEC pump to the yellow system.
This link is normally displayed in green. It is displayed in amber when the yellow pressure is lower than 1450 psi or when a yellow engine pump low pressure occurs, the yellow ELEC pump being OFF. It is not displayed when the yellow system data are not available from the SDAC.
Link from the ELEC pump to the yellow system.
This link is normally displayed in green. It is displayed in amber when the yellow pressure is lower than 1450 psi or when a yellow engine pump low pressure occurs, the yellow ELEC pump being OFF. It is not displayed when the yellow system data are not available from the SDAC.
(6) Item 6
Link from the yellow engine pump to the ELEC pump.
This link is normally displayed in green. It is displayed in amber when a yellow engine pump low pressure occurs. It is not displayed when the information is not available from the SDAC.
Link from the yellow engine pump to the ELEC pump.
This link is normally displayed in green. It is displayed in amber when a yellow engine pump low pressure occurs. It is not displayed when the information is not available from the SDAC.
(7) Item 7
Link from the fire valve to the engine pump.
This link is normally displayed in green. It is displayed in amber when the fire valve is displayed in amber or when the yellow reservoir quantity is lower than 3.5 litre
Link from the fire valve to the engine pump.
This link is normally displayed in green. It is displayed in amber when the fire valve is displayed in amber or when the yellow reservoir quantity is lower than 3.5 litre
(8) Item 8
Link from the blue ELEC pump to the RAT.
This link is normally displayed in green. It is displayed in amber when a blue ELEC pump low pressure occurs. It is not displayed when the information is not available from the SDAC.
Link from the blue ELEC pump to the RAT.
This link is normally displayed in green. It is displayed in amber when a blue ELEC pump low pressure occurs. It is not displayed when the information is not available from the SDAC.
(9) Item 9
Link from the fire valve to the engine pump.
This link is normally displayed in green. It is displayed in amber when the fire valve is displayed in amber or when the green reservoir quantity is lower than 3.5 litre
Link from the fire valve to the engine pump.
This link is normally displayed in green. It is displayed in amber when the fire valve is displayed in amber or when the green reservoir quantity is lower than 3.5 litre
(10) Item 10
Link from the green ENG pump to the green hydraulic system.
This link is normally displayed in green. It is displayed in amber when a green ENG pump low pressure occurs. It is not displayed when the information is not available from the SDAC.
Link from the green ENG pump to the green hydraulic system.
This link is normally displayed in green. It is displayed in amber when a green ENG pump low pressure occurs. It is not displayed when the information is not available from the SDAC.