DOC AIRBUS | AMM A320FEMERGENCY ESCAPE SLIDE RELEASE AND OVERPRESSURE WARNING SYSTEMS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
A. Emergency Escape-Slide Warning
The indicator light which shows that the escape slide is armed warns the person who tries to open a door or an emergency exit of the status of the door or exit escape slide.
The indicator light, which shows that the escape slide is armed, gives a warning to the person who tries to open a door, an emergency exit door or an overwing emergency exit-door. If the person continues to open the door, there is a risk of unintended deployment of the escape slide. This can cause injuries to persons on the ground or damage to equipment on the outer side of the aircraft.
The indicator light which shows that the escape slide is armed warns the person who tries to open a door or an emergency exit of the status of the door or exit escape slide.
The indicator light, which shows that the escape slide is armed, gives a warning to the person who tries to open a door, an emergency exit door or an overwing emergency exit-door. If the person continues to open the door, there is a risk of unintended deployment of the escape slide. This can cause injuries to persons on the ground or damage to equipment on the outer side of the aircraft.
B. Overpressure Warning
In some conditions, there is a risk of overpressure in the cabin. The CABIN PRESSURE warning-light panel tells the person in or out of the aircraft that it is dangerous to open the passenger/crew door or emergency exit door. The remaining pressure in the cabin can cause sudden opening of the door, which can cause injuries to persons or damage to the aircraft. The cabin pressure warning-function is available only when the engines are stopped and the escape slide is disarmed.
In some conditions, there is a risk of overpressure in the cabin. The CABIN PRESSURE warning-light panel tells the person in or out of the aircraft that it is dangerous to open the passenger/crew door or emergency exit door. The remaining pressure in the cabin can cause sudden opening of the door, which can cause injuries to persons or damage to the aircraft. The cabin pressure warning-function is available only when the engines are stopped and the escape slide is disarmed.
2. Component Location
SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL
SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL
SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL
Indicator Lights ** ON A/C NOT FOR ALL
Warning Light Panels ** ON A/C NOT FOR ALL
Warning Light Panels ** ON A/C NOT FOR ALL
Warning Light Panels ** ON A/C NOT FOR ALL
SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL SLIDE ARMED Indicator Light of the Emergency Exits ** ON A/C NOT FOR ALL Indicator Lights ** ON A/C NOT FOR ALL Warning Light Panels ** ON A/C NOT FOR ALL Warning Light Panels ** ON A/C NOT FOR ALL Warning Light Panels ** ON A/C NOT FOR ALL A. Passenger/Crew Doors
| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C ALL | |||||
| 1WN1 | IND LT-SLIDE ARMED, FWD L DOOR | 831 | 52-73-21 | ||
| 1WN2 | IND LT-SLIDE ARMED, FWD R DOOR | 841 | 52-73-21 | ||
| 3WN1 | IND LT-SLIDE ARMED, AFT L DOOR | 832 | 52-73-21 | ||
| 3WN2 | IND LT-SLIDE ARMED, AFT R DOOR | 842 | 52-73-21 | ||
| 4WN1 | PROX SW-HANDLE, L FWD ESC SLIDE | 831 | 52-73-11 | ||
| 4WN2 | PROX SW-HANDLE, R FWD ESC SLIDE | 841 | 52-73-11 | ||
| 7WN1 | PROX SW-HANDLE, L AFT ESC SLIDE | 832 | 52-73-11 | ||
| 7WN2 | PROX SW-HANDLE, R AFT ESC SLIDE | 842 | 52-73-11 | ||
| 14WN | PRESS SW-CABIN PRESS DET | 122 | 52-73-12 | ||
| 16WN1 | WARN LT PNL-CABIN PRESSURE, FWD L DOOR | 831 | 52-73-22 | ||
| 16WN2 | WARN LT PNL-CABIN PRESSURE, FWD R DOOR | 841 | 52-73-22 | ||
| 17WN1 | WARN LT PNL-CABIN PRESSURE, AFT L DOOR | 832 | 52-73-22 | ||
| 17WN2 | WARN LT PNL-CABIN PRESSURE, AFT R DOOR | 842 | 52-73-22 | ||
| 1516WM | TARGET-HANDLE PROX SW, L FWD ESC SLIDE | 831 | 26-10-00 | ||
| 1517WM | TARGET-HANDLE PROX SW, R FWD ESC SLIDE | 841 | 26-10-00 | ||
| 1518WM | TARGET-HANDLE PROX SW, L AFT ESC SLIDE | 832 | 26-10-00 | ||
| 1519WM | TARGET-HANDLE PROX SW, R AFT ESC SLIDE | 842 | 26-10-00 | ||
B. Emergency Exits
| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 241 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 242 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 834 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 844 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 835 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 845 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 5WN1 | PROX SW-HANDLE, L FWD EMER EXIT ESC SLIDE | 833 | 52-73-11 | ||
| 5WN2 | PROX SW-HANDLE, R FWD EMER EXIT ESC SLIDE | 843 | 52-73-11 | ||
| ** ON A/C NOT FOR ALL | |||||
| 6WN1 | PROX SW-HANDLE, L AFT EMER EXIT ESC SLIDE | 834 | 52-73-11 | ||
| 6WN2 | PROX SW-HANDLE, R AFT EMER EXIT ESC SLIDE | 844 | 52-73-11 | ||
| ** ON A/C NOT FOR ALL | |||||
| 6WN1 | PROX SW-HANDLE, L AFT EMER EXIT ESC SLIDE | 835 | 52-73-11 | ||
| 6WN2 | PROX SW-HANDLE, R AFT EMER EXIT ESC SLIDE | 845 | 52-73-11 | ||
| ** ON A/C ALL | |||||
| 1557WM | TARGET-HANDLE PROX SW, L AFT EMER EXIT ESC SLIDE | 242 | 26-10-00 | ||
| 1558WM | TARGET-HANDLE PROX SW, R AFT EMER EXIT ESC SLIDE | 241 | 26-10-00 | ||
| ** ON A/C NOT FOR ALL | |||||
| 1555WM | TARGET-HANDLE PROX SW, L FWD EMER EXIT ESC SLIDE | 242 | 26-10-00 | ||
| 1556WM | TARGET-HANDLE PROX SW, R FWD EMER EXIT ESC SLIDE | 241 | 26-10-00 | ||
| ** ON A/C NOT FOR ALL | |||||
| 21WN1 | IND LT-SLIDE ARMED, FWD L EMERGENCY EXIT | 833 | 52-73-21 | ||
| 21WN2 | IND LT-SLIDE ARMED, FWD R EMERGENCY EXIT | 843 | 52-73-21 | ||
| 19WN1 | WARN LT PNL-CABIN PRESSURE, FWD L EMERGENCY EXIT | 833 | 52-73-22 | ||
| 19WN2 | WARN LT PNL-CABIN PRESSURE, FWD R EMERGENCY EXIT | 843 | 52-73-22 | ||
| 20WN1 | WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT | 834 | 52-73-22 | ||
| 20WN2 | WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT | 844 | 52-73-22 | ||
| ** ON A/C NOT FOR ALL | |||||
| 20WN1 | WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT | 835 | 52-73-22 | ||
| 20WN2 | WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT | 845 | 52-73-22 | ||
C. Overwing Emergency Exit-Door
| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 34WN1 | PROX SW-ESC SLIDE HANDLE, L FWD OVERWING DOOR | 834 | 52-71-00 | ||
| 34WN2 | PROX SW-ESC SLIDE HANDLE, R FWD OVERWING DOOR | 844 | 52-71-00 | ||
| 34WN3 | PROX SW-ESC SLIDE HANDLE, L AFT OVERWING DOOR | 834 | 52-71-00 | ||
| 34WN4 | PROX SW-ESC SLIDE HANDLE, R AFT OVERWING DOOR | 844 | 52-71-00 | ||
| 35WN1 | IND LT-SLIDE ARMED, L OVERWING DOORS | 834 | 52-73-21 | ||
| 35WN2 | IND LT-SLIDE ARMED, R OVERWING DOORS | 844 | 52-73-21 | ||
| 1534WM1 | TARGET-ESC SLIDE HANDLE, L FWD OVERWING DOOR | 834 | 52-22-00 | ||
| 1534WM2 | TARGET-ESC SLIDE HANDLE, R FWD OVERWING DOOR | 844 | 52-22-00 | ||
| 1534WM3 | TARGET-ESC SLIDE HANDLE, L AFT OVERWING DOOR | 834 | 52-22-00 | ||
| 1534WM4 | TARGET-ESC SLIDE HANDLE, R AFT OVERWING DOOR | 844 | 52-22-00 | ||
D. Emergency Exits
| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 241 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 242 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 834 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 844 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 2WN1 | IND LT-SLIDE ARMED, L EMER EXIT | 835 | 52-73-21 | ||
| 2WN2 | IND LT-SLIDE ARMED, R EMER EXIT | 845 | 52-73-21 | ||
| ** ON A/C NOT FOR ALL | |||||
| 6WN1 | PROX SW-HANDLE, L AFT EMER EXIT ESC SLIDE | 834 | 52-73-11 | ||
| 6WN2 | PROX SW-HANDLE, R AFT EMER EXIT ESC SLIDE | 844 | 52-73-11 | ||
| ** ON A/C NOT FOR ALL | |||||
| 6WN1 | PROX SW-HANDLE, L AFT EMER EXIT ESC SLIDE | 835 | 52-73-11 | ||
| 6WN2 | PROX SW-HANDLE, R AFT EMER EXIT ESC SLIDE | 845 | 52-73-11 | ||
| ** ON A/C ALL | |||||
| 1557WM | TARGET-HANDLE PROX SW, L AFT EMER EXIT ESC SLIDE | 242 | 26-10-00 | ||
| 1558WM | TARGET-HANDLE PROX SW, R AFT EMER EXIT ESC SLIDE | 241 | 26-10-00 | ||
| ** ON A/C NOT FOR ALL | |||||
| 20WN1 | WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT | 834 | 52-73-22 | ||
| 20WN2 | WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT | 844 | 52-73-22 | ||
| ** ON A/C NOT FOR ALL | |||||
| 20WN1 | WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT | 835 | 52-73-22 | ||
| 20WN2 | WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT | 845 | 52-73-22 | ||
3. System Description
A. Emergency Escape-Slide Warning
Schematic of the Passenger/Crew Doors and Emergency Exits ** ON A/C NOT FOR ALL
Schematic of the Passenger/Crew Doors and Emergency Exits ** ON A/C NOT FOR ALL
When you open a passenger/crew door, or a flap which gives access to the control handle of an emergency exit a logic 1 is sent.
The slide armed data is related to the emission of a logic 0 on the passenger/crew doors and of a logic 1 on the emergency exits.
When a person tries to open a passenger/crew door, or the control handle flap of an emergency exit with the escape slide in the armed configuration, the signals are sent to the indicator light through a logic AND gate.
In the case of the passenger/crew doors, a logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The 2 inputs of the indicator light are in logic state 1 and this causes the indicator light to come on.
When you open a passenger/crew door or an emergency exit a logic 1 is sent.
The slide armed data is related to the emission of a logic 0.
When a person tries to open a passenger/crew door or the emergency exit with the escape slide in the armed configuration, the signals are sent to the indicator light through a logic AND gate.
A logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The 2 inputs of the indicator light are in logic state 1 and this causes the indicator light to come on.
When you open a passenger/crew door, an emergency exit or an overwing emergency exit-door, a logic 1 is sent.
The slide armed status is related to the emission of a logic 0.
When a person tries to open one of the doors and the escape slide is armed, the signals are sent to the indicator light through a logic AND gate.
A logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The two inputs of the indicator light are in logic state 1 and this makes the indicator light come on.
For the passenger/crew door or emergency exit doors, the SLIDE ARMED status is related to the near target.
For the overwing emergency exit-doors, the SLIDE ARMED status is related to the far target.
Schematic of the Passenger/Crew Doors and Emergency Exits ** ON A/C NOT FOR ALL Schematic of the Passenger/Crew Doors and Emergency Exits ** ON A/C NOT FOR ALL The slide armed data is related to the emission of a logic 0 on the passenger/crew doors and of a logic 1 on the emergency exits.
When a person tries to open a passenger/crew door, or the control handle flap of an emergency exit with the escape slide in the armed configuration, the signals are sent to the indicator light through a logic AND gate.
In the case of the passenger/crew doors, a logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The 2 inputs of the indicator light are in logic state 1 and this causes the indicator light to come on.
When you open a passenger/crew door or an emergency exit a logic 1 is sent.
The slide armed data is related to the emission of a logic 0.
When a person tries to open a passenger/crew door or the emergency exit with the escape slide in the armed configuration, the signals are sent to the indicator light through a logic AND gate.
A logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The 2 inputs of the indicator light are in logic state 1 and this causes the indicator light to come on.
When you open a passenger/crew door, an emergency exit or an overwing emergency exit-door, a logic 1 is sent.
The slide armed status is related to the emission of a logic 0.
When a person tries to open one of the doors and the escape slide is armed, the signals are sent to the indicator light through a logic AND gate.
A logic inverter changes the signal related to the arming of the escape slide into a logic 1.
The two inputs of the indicator light are in logic state 1 and this makes the indicator light come on.
For the passenger/crew door or emergency exit doors, the SLIDE ARMED status is related to the near target.
For the overwing emergency exit-doors, the SLIDE ARMED status is related to the far target.
B. Overpressure Warning
CABIN PRESSURE Warning Light Panel ** ON A/C NOT FOR ALL
CABIN PRESSURE Warning Light Panel ** ON A/C NOT FOR ALL
CABIN PRESSURE Warning-Light Panel ** ON A/C NOT FOR ALL
CABIN PRESSURE Warning Light Panel ** ON A/C NOT FOR ALL CABIN PRESSURE Warning Light Panel ** ON A/C NOT FOR ALL CABIN PRESSURE Warning-Light Panel ** ON A/C NOT FOR ALL (1) Each CABIN PRESSURE warning-light panel receives the data that follow:
(a) Slide disarmed. This data is related to a logic 1.
(b) The oil pressure decreases on one of the two engines or on the two engines.
If one or two engines is(are) stopped:
If one or two engines is(are) stopped:
- Two contactors send a signal at the same time to the CABIN PRESSURE warning-light panel, and
- Relays 18WN1 and 18WN2 are de-energized.
(c) Overpressure indication from cabin-pressure detection pressure switch 14WN.
When the passenger cabin pressure is more than 2.5mb, a ground signal is sent to the CABIN PRESSURE warning-light panel after five seconds. This prevents the other unwanted warning.
When these three data occur at the same time, the CABIN PRESSURE warning-light panel flashes.
When the passenger cabin pressure is more than 2.5mb, a ground signal is sent to the CABIN PRESSURE warning-light panel after five seconds. This prevents the other unwanted warning.
When these three data occur at the same time, the CABIN PRESSURE warning-light panel flashes.
4. Power Supply
A. Emergency Escape-Slide Warning
The circuit, which indicates that the escape slide is armed, gets its power supply from battery bus bar 301PP. When this bus bar is not available, the circuit is supplied from hot bus bar 702PP.
The circuit, which indicates that the escape slide is armed, gets its power supply from battery bus bar 301PP. When this bus bar is not available, the circuit is supplied from hot bus bar 702PP.
B. Overpressure Warning
(1) The CABIN PRESSURE warning-light panels are supplied through the SLIDE ARMED indicator lights, from battery bus bar 301 or hot bus bar 702PP.
5. Component Description
A. Emergency Escape-Slide Warning
(1) Circuit breakers
Two circuit breakers are monitored. They enable supply of the circuit with 28VDC and are installed on the panel 121VU.
Two circuit breakers are monitored. They enable supply of the circuit with 28VDC and are installed on the panel 121VU.
(2) Relay [12WN]
The relay is installed in panel 103VU. It enables power supply changeover from the battery busbar to the hot busbar. It is supplied by the battery busbar.
The relay is installed in panel 103VU. It enables power supply changeover from the battery busbar to the hot busbar. It is supplied by the battery busbar.
(3) SLIDE ARMED indicator lights
[1WN1] [1WN2] [2WN1] [2WN2] [3WN1] [3WN2]
They warn any person who tries to open a door with the escape slide in the armed configuration.
Bus bars 301PP or 702PP supply continuously the electronic system of these indicator lights.
The consumption (with the lamps off) of each indicator light is less than 10mA.
These indicator lights include:
[1WN1] [1WN2] [2WN1] [2WN2] [3WN1] [3WN2]
They warn any person who tries to open a door with the escape slide in the armed configuration.
Bus bars 301PP or 702PP supply continuously the electronic system of these indicator lights.
The consumption (with the lamps off) of each indicator light is less than 10mA.
These indicator lights include:
- 1 relay which supplies the proximity switches:
either with 6VDC (relay energized) from the batteries of the WL circuit or
or with 28VDC (relay de-energized) from the battery or the hot busbars - terminals which are used to:
send data to the ECAM system,
supply the other indicator lights
send slide disarmed data to the CABIN PRESSURE warning-light panels.
(4) Circuit breakers [13WN] [15WN]
They supply the circuit with 28VDC and are installed on panel 121VU.
They supply the circuit with 28VDC and are installed on panel 121VU.
(5) Relay [12WN]
This relay is installed in panel 103VU. It enables power supply from the battery busbar to the hot busbar. The battery bus bar supplies power to the relay.
This relay is installed in panel 103VU. It enables power supply from the battery busbar to the hot busbar. The battery bus bar supplies power to the relay.
(6) SLIDE ARMED indicator lights
[1WN1] [1WN2] [2WN1] [2WN2] [3WN1] [3WN2] [35WN1] [35WN2]
They give a warning to the person who tries to open a door with the escape slide in the armed configuration.
Bus bars 301PP or 702PP continuously apply the electronic system of these indicator lights.
The energy consumption (with the lamps off) of each indicator light is less than 10mA.
These indicator lights include:
[1WN1] [1WN2] [2WN1] [2WN2] [3WN1] [3WN2] [35WN1] [35WN2]
They give a warning to the person who tries to open a door with the escape slide in the armed configuration.
Bus bars 301PP or 702PP continuously apply the electronic system of these indicator lights.
The energy consumption (with the lamps off) of each indicator light is less than 10mA.
These indicator lights include:
(a) One relay which supplies the proximity switches with:
- 6VDC (relay energized) from the batteries of the WL circuit, or
- 28VDC (relay de-energized) from the battery or the hot bus bars.
(b) Terminals which are used to:
- Send data to the ECAM system,
- Supply the other indicator lights,
- Send slide disarmed data to the CABIN PRESSURE warning-light panels.
(7) Proximity switches [4WN1] [4WN2] [13WV1] [13WV2] [5WN1] [5WN2] [19WV1] [19WV2] [6WN1] [6WN2] [21WV1] [21WV2] [7WN1] [7WN2] [17WV1] [17WV2]
(Ref. AMM D/O 52-71-00-00)
(Ref. AMM D/O 52-71-00-00)
(8) Proximity switches [4WN1] [4WN2] [13WV1] [13WV2] [5WN1] [5WN2] [19WV1] [19WV2] [6WN1] [6WN2] [21WV1] [21WV2] [7WN1] [7WN2] [17WV1] [17WV2]
(Ref. AMM D/O 52-71-00-00)
(Ref. AMM D/O 52-71-00-00)
B. Overpressure Warning
(1) Relays [18WN1] [18WN2]
When one of the engines or the two engines is(are) stopped, one of these relays or the two relays are de-energized and send a ground signal.
When one of the engines or the two engines is(are) stopped, one of these relays or the two relays are de-energized and send a ground signal.
(2) Pressure switch [14WN]
Its function is to measure the cabin pressure. It is made of a membrane which activates a switch when the cabin pressure is more than 2.5 mb (transmission of logic 0).
Its function is to measure the cabin pressure. It is made of a membrane which activates a switch when the cabin pressure is more than 2.5 mb (transmission of logic 0).
(3) CABIN PRESSURE warning-light panels [16WN1] [16WN2] [17WN1] [17WN2]
The warning light panels flash when the cabin overpressure is more than 2.5mb, one of the 2 engines or the 2 engines shut down and the escape slides disarmed.
Their flash frequency is 2 Hz and they are supplied with 28VDC (battery busbar or hot busbar).
The warning light panels flash when the cabin overpressure is more than 2.5mb, one of the 2 engines or the 2 engines shut down and the escape slides disarmed.
Their flash frequency is 2 Hz and they are supplied with 28VDC (battery busbar or hot busbar).
(4) CABIN PRESSURE warning-light panels [16WN1] [16WN2] [17WN1] [17WN2] [19WN1] [19WN2]
The warning-light panels flash when:
The warning-light panels flash when:
- The cabin pressure is more than 2.5mb,
- One or two engines is(are) stopped, and
- The escape slides are disarmed.
Their flashing frequency is 2 Hz and they are supplied with 28VDC from the battery bus bar or hot bus bar.
6. Operation
A. Emergency Escape Slide Warning
(1) Passenger/crew doors
(a) Indication on the lower ECAM display unit for the following configurations:
1 Door locked - Escape slide armed
- The door symbol is displayed in green,
- The white SLIDE indication is displayed near the door symbol.
2 Door locked - Escape slide disarmed
- The door symbol is displayed in green,
- No indication is displayed near the door symbol.
3 Door unlocked - Escape slide armed
- The door symbol is displayed in amber,
- The white SLIDE and the amber CABIN indications are displayed near the door symbol.
- the MASTER CAUT lights come on,
- the aural warning sounds.
4 Door unlocked - Escape slide disarmed
- The door symbol is displayed in amber,
- The white SLIDE indication goes out of view and is replaced by the amber "-----" and CABIN indications.
- The amber "-----" and CABIN indications are displayed near the door symbol.
(b) If the doors are opened in an emergency, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
(2) Emergency exit
(a) Indication on the lower ECAM display unit
1 Normal configuration (cover flap not pulled down) - Escape slide armed
- The door symbol is displayed in green,
- The white SLIDE indication is displayed near the door symbol.
2 Normal configuration (cover flap not pulled down) - Escape slide disarmed
- The door symbol is displayed in green,
- No indication is displayed near the door symbol.
3 Cover flap of the emergengy exit pulled down - Escape slide armed
- The door symbol is displayed in amber
- The white SLIDE and the amber EMER EXIT indications are displayed near the door symbol.
4 Cover flap of the emergengy exit pulled down - Escape slide disarmed
- The door symbol is displayed in amber,
- The amber "-----" and EMER EXIT indications are displayed near the door symbol.
(b) If the doors are opened in an emergency, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
(3) Passenger/crew doors
(a) Indication on the lower ECAM display unit
1 Door locked - Escape slide armed
- The door symbol is displayed in green,
- The white SLIDE indication is displayed near the door symbol.
2 Door locked - Escape slide disarmed
- The door symbol is displayed in green,
- No indication is displayed near the door symbol.
3 Door unlocked - Escape slide armed
- The door symbol is displayed in amber,
- The white SLIDE and the amber CABIN indications are displayed near the door symbol.
- the MASTER CAUT lights come on,
- the aural warning sounds in the cockpit.
4 Door unlocked - Escape slide disarmed
- The door symbol is displayed in amber,
- The white SLIDE indication goes out of view and is replaced by the amber "-----" and CABIN indications.
- The amber "-----" and CABIN indications are displayed near the door symbol.
(b) If the doors are opened in an emergency, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
(4) Emergency exits
(a) Indication on the lower ECAM display unit
1 Door locked - Escape slide armed
- The door symbol is displayed in green,
- The white SLIDE indication is displayed near the door symbol.
2 Door locked - Escape slide disarmed
- The door symbol is displayed in green
- No indication is displayed near the door symbol.
3 Door unlocked - Escape slide armed
- Door symbol is displayed in amber
- The white SLIDE and the amber EMER EXIT indications are displayed near the door symbol.
- the MASTER CAUT lights come on,
- the aural warning sounds
4 Door unlocked - Escape slide disarmed
- The door symbol is displayed in amber,
- The amber "-----" and EMER EXIT indications are displayed near the door symbol.
(b) If the doors are opened in an emergency, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
(5) Passenger/crew doors
(a) Message on the lower ECAM display unit:
1 Door locked - escape slide armed:
- The door symbol is shown in green.
- The white SLIDE message is shown near the door symbol.
2 Door locked - escape slide disarmed:
- The door symbol is shown in green.
- No message is shown near the door symbol.
3 Door unlocked - escape slide armed:
- The door symbol is shown in amber.
- The white SLIDE and the amber CABIN messages are shown near the door symbol.
- The MASTER CAUT lights come on.
- The aural warning operates in the cockpit.
4 Door unlocked - escape slide disarmed:
- The door symbol is shown in amber.
- The white SLIDE message goes out of view and then the amber "-----" and CABIN messages come into view.
- The amber "-----" and CABIN messages are shown near the door symbol.
(b) If there is an emergency and the doors are open, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
(6) Emergency exits and overwing emergency exit-doors
(a) Message on the lower ECAM display unit:
1 Door locked - escape slide armed:
- The door symbol is shown in green.
- The white SLIDE message is shown near the door symbol.
2 Door locked - escape slide disarmed:
- The door symbol is shown in green.
- No message is shown near the door symbol.
3 Door unlocked - escape slide armed:
- Door symbol is shown in amber.
- The white SLIDE and the amber EMER EXIT messages are shown near the door symbol.
- The MASTER CAUT lights come on.
- The aural warning operates.
4 Door unlocked - escape slide disarmed:
- The door symbol is shown in amber.
- The amber "-----" and EMER EXIT messages are shown near the door symbol.
(b) If there is an emergency and the doors are open, the SLIDE ARMED indicator lights are on, but they must cause no disturbance to passengers.
B. Overpressure Warning
Electrical Schematic ** ON A/C NOT FOR ALL
Electrical Schematic ** ON A/C NOT FOR ALL
Electrical Schematic ** ON A/C NOT FOR ALL
Electrical Schematic ** ON A/C NOT FOR ALL
Electrical Schematic ** ON A/C NOT FOR ALL
Electrical Schematic ** ON A/C NOT FOR ALL Electrical Schematic ** ON A/C NOT FOR ALL Electrical Schematic ** ON A/C NOT FOR ALL Electrical Schematic ** ON A/C NOT FOR ALL Electrical Schematic ** ON A/C NOT FOR ALL (1) When the cabin pressure is more than 2.5 mb, with one or the two engines stopped and the escape slides disarmed, the CABIN PRESSURE warning-light panels flash.
If there is an emergency escape, the slide armed data prevent the flashing of the CABIN PRESSURE warning-light panels.
This prevents the panic of the passengers.
In the cockpit, an amber symbol comes into view on the ECAM lower display-unit which identifies the open door.
If there is an emergency escape, the slide armed data prevent the flashing of the CABIN PRESSURE warning-light panels.
This prevents the panic of the passengers.
In the cockpit, an amber symbol comes into view on the ECAM lower display-unit which identifies the open door.