W DOC AIRBUS | AMM A320F

Operational Test of the Cabin Overpressure Warning-System

TASK 52-73-00-710-004-A
Operational Test of the Cabin Overpressure Warning-System

WARNING: DO NOT TOUCH THE PROBES IMMEDIATELY AFTER THE TEST. THEY ARE HOT AND CAN BURN YOU.
CAUTION: REMOVE THE PROTECTIVE COVERS FROM THE PROBES BEFORE YOU DO THE TEST.
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific
AR
ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific
AR
CAP - BLANKING
98D52703000000
1
CONNECTOR SHUNT
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
831, 832, 835, 841, 842, 845
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-36-00-740-008-A
Access to the Parameter Call-Up Menus
TASK 52-10-00-010-001-A
Opening of the Passenger/Crew Door
TASK 52-10-00-410-001-A
Closing of the Passenger/Crew Door
TASK 52-10-00-860-001-A
Special Precautions before Work on the Passenger/Crew Door
TASK 52-10-00-860-002-A
Special Precautions after Work on the Passenger/Crew Door
TASK 52-22-00-010-001-A
Opening of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-010-002-A
Opening of the Emergency Exit Doors from the Outside
TASK 52-22-00-410-001-A
Closing of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-410-002-A
Closing of the Emergency Exit Doors from the Outside
TASK 52-22-00-860-003-A
Special Precaution before Maintenance on the Door Damper and Emergency Operation Cylinder
TASK 52-22-00-860-004-A
Special Precaution after Maintenance on the Door Damper and Emergency Operation Cylinder
3. Job Set-up
Subtask 52-73-00-861-054-A
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 52-73-00-860-060-A
B. Aircraft Maintenance Configuration
   (1) On ENG panel 115VU, make sure that the ENG MASTER 1 and ENG MASTER 2 control switches are in the OFF position.
Subtask 52-73-00-020-053-A
C. Disconnection of Component
   (1) Disconnect the electrical connector of the cabin-pressure detection pressure-switch (14WN).
   (2) Put the CAP - BLANKING on the electrical connector.
Subtask 52-73-00-010-055-B ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position in front of the applicable passenger/crew door 831 or 841 or 832 or 842, emergency exit 833 or 843 or 834 or 844.
   (2) Open the applicable passenger/crew door (Ref. AMM TASK 52-10-00-010-001), emergency exit (Ref. AMM TASK 52-22-00-010-002).
   (3) Obey the special precautions before you start work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-003).
   (4) Close all the doors (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
Subtask 52-73-00-010-055-D ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position in front of the applicable passenger/crew door 831 or 841 or 832 or 842.
   (2) Open the applicable passenger/crew door (Ref. AMM TASK 52-10-00-010-001).
   (3) Obey the special precautions before you start work the door (Ref. AMM TASK 52-10-00-860-001).
   (4) Close the passenger/crew doors (Ref. AMM TASK 52-10-00-410-001).
Subtask 52-73-00-010-055-H ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position in front of the applicable passenger/crew door 831 or 841 or 832 or 842, emergency exit 833 or 843 or 834 or 844.
   (2) Open the applicable passenger/crew door (Ref. AMM TASK 52-10-00-010-001), emergency exit (Ref. AMM TASK 52-22-00-010-002).
   (3) Obey the special precautions before you start work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-003).
   (4) Close all the doors (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
Subtask 52-73-00-010-055-J ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position in front of the applicable passenger/crew door 831 or 841 or 832 or 842, emergency exit 833 or 843 or 834 or 844.
   (2) Open the applicable passenger/crew door (Ref. AMM TASK 52-10-00-010-001), emergency exit (Ref. AMM TASK 52-22-00-010-002).
   (3) Obey the special precautions before you start work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-003).
   (4) Close all the doors (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
Subtask 52-73-00-010-055-M ** ON A/C NOT FOR ALL
D. Get Access
   (1) For the passenger/crew door:
     (a) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position:
       1 For the left passenger/crew door, at zone 831 or 832.
       2 For the right passenger/crew door, at zone 841 or 842.
     (b) Open passenger/crew door 831, 841, 832 or 842 (Ref. AMM TASK 52-10-00-010-001).
     (c) Obey the special precautions before you start work on the door (Ref. AMM TASK 52-10-00-860-001).
     (d) Close passenger/crew door 831, 841, 832 or 842 (Ref. AMM TASK 52-10-00-410-001).
   (2) For the emergency exit:
     (a) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at zone 835 or 845.
     (b) Open emergency exit 835 or 845 (Ref. AMM TASK 52-22-00-010-001).
     (c) Obey the special precautions before you start work on the emergency exit door (Ref. AMM TASK 52-22-00-860-003).
     (d) Close emergency exit 835 or 845 (Ref. AMM TASK 52-22-00-410-002).
Subtask 52-73-00-010-055-N ** ON A/C NOT FOR ALL
D. Get Access
   (1) Obey the special precautions before you start work the door (Ref. AMM TASK 52-10-00-860-001).
   (2) Close the passenger/crew doors (Ref. AMM TASK 52-10-00-410-001).
Subtask 52-73-00-865-060-A
E. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/OIL/PRESS2EN2N42
121VUENGINE/ENG1/OIL/PRESS2EN1N40
** ON A/C ALL
121VUEIS/SLIDES/ARM AND WARN/FLT15WNP11
121VUEIS/SLIDES/ARM AND WARN/GND13WNP10
** ON A/C NOT FOR ALL
121VUOIL/PRESS/ENG210KC2N42
121VUOIL/PRESS/ENG110KC1N40
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/OIL/PRESS/AND REV SNSR/CHAN A2EN2N42
121VUENGINE/ENG1/OIL/PRESS/AND REV SNSR/CHAN A2EN1N40
Subtask 52-73-00-865-061-A
F. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VULIGHTING/EMER LT/CABIN2WLH06
49VULIGHTING/EMER LT/CABIN1WLH05
** ON A/C NOT FOR ALL
49VULIGHTING/EMER LT/CABIN2WLH04
49VULIGHTING/EMER LT/CABIN1WLH03
** ON A/C ALL
122VULIGHTING/CABIN/EMER/LT3WLV07
4. Procedure
Subtask 52-73-00-710-053-C ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
   (1) Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.Connect the 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure- switch (14WN).
On the forward-left passenger/crew door:
  • The cabin-pressure warning-light of the forward-left door panel (16WN1) flashes.

On the forward-right passenger/crew door:
  • The cabin-pressure warning-light of the forward-right door panel (16WN2) flashes.

On the aft-left passenger/crew door:
  • The cabin-pressure warning-light of the aft-left door panel (17WN1) flashes.

On the aft-right passenger/crew door:
  • The cabin-pressure warning-light of the aft-right door panel (17WN2) flashes.
2.On the MCDU:
  • On the AIDS PARAM LABEL CALL-UP page, enter parameter label call-up 026/1/ 124/00 with the alphanumeric keys (related to FWC bus L1 LABEL 124 sdi 00).
On the MCDU:
  • The parameter label call-up is shown on the bottom of the display (scratchpad).
  • Push line select key 1L or 4L to get the parameter label call-up.
  • The parameter label call-up is shown on the data field with all information.
  • Wait for five seconds.
  • Make sure that bit 21 is set to 1.
3.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is set to DISARMED.

4.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the OFF position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light flashes.
5.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the ON position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light does not flash.
6.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the OFF position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light flashes.
7.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the cabin-pressure detection pressure-switch (14WN).
On all the passenger/crew doors:
  • The cabin-pressure red warning-light goes off.

On the MCDU:
  • Make sure that the bit related to parameter label call-up 026/1/124/00 bit 21 is set to 0.
8.On the MCDU:

  • Push the MCDU MENU mode key.
  • The MCDU MENU page comes into view.
Subtask 52-73-00-710-053-D ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
ACTION
RESULT
1.Connect a 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure-switch (14WN).
On the forward left passenger/crew door:
  • The forward-left door cabin-pressure warning-light panel (16WN1) flashes.

On the forward right passenger/crew door:
  • The forward-right door cabin-pressure warning-light panel (16WN2) flashes.

On the aft left passenger/crew door:
  • The aft-left door cabin-pressure warning-light panel (17WN1) flashes.

On the aft right passenger/crew door:
  • The aft-right door cabin-pressure warning-light panel (17WN2) flashes.
2.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is in DISARMED position.

3.On the ENG panel 115VU:
  • Put the ENG MASTER 1 or 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
4.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the ON position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light does not flash.
5.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
6.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the pressure switch (14WN).
On all the passenger/crew doors:
  • The red CABIN PRESSURE warning light goes off.
Subtask 52-73-00-710-053-E ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
ACTION
RESULT
1.Connect a 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure-switch (14WN).
On the forward left passenger/crew door:
  • The forward-left door cabin-pressure warning-light panel (16WN1) flashes.

On the forward right passenger/crew door:
  • The forward-right door cabin-pressure warning-light panel (16WN2) flashes.

On the aft left passenger/crew door:
  • The aft-left door cabin-pressure warning light-panel (17WN1) flashes.

On the aft right passenger/crew door:
  • The aft-right door cabin-pressure warning light-panel (17WN2) flashes.

On the forward left emergency exit:
  • The forward-left emergency exit cabin-pressure warning-light panel (19WN1) flashes.

On the forward right emergency exit:
  • The forward-right emergency exit cabin-pressure warning-light panel (19WN2) flashes.

On the aft left emergency exit:
  • The aft-left emergency exit cabin-pressure warning-light panel (20WN1) flashes.

On the aft right emergency exit:
  • The aft-right emergency exit cabin-pressure warning-light panel (20WN2) flashes.
2.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is set in DISARMED position.

3.On the ENG panel 115VU:
  • Put the ENG MASTER 1 or 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
4.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the ON position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light does not flash.
5.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
6.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the pressure switch (14WN).
On all the passenger/crew doors and emergency exits:
  • The red CABIN PRESSURE warning light goes off.
Subtask 52-73-00-710-053-G ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
   (1) Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.Connect the 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure- switch (14WN).
On the forward-left passenger/crew door:
  • The cabin-pressure warning-light of the forward-left door panel (16WN1) flashes.

On the forward-right passenger/crew door:
  • The cabin-pressure warning-light of the forward-right door panel (16WN2) flashes.

On the aft-left passenger/crew door:
  • The cabin-pressure warning-light of the aft-left door panel (17WN1) flashes.

On the aft-right passenger/crew door:
  • The cabin-pressure warning-light of the aft-right door panel (17WN2) flashes.

On the forward-left emergency exit:
  • The forward-left emergency exit of the cabin-pressure warning-light panel (19WN1) flashes.

On the forward-right emergency exit:
  • The forward-right emergency exit of the cabin-pressure warning-light panel (19WN2) flashes.

On the aft-eft emergency exit:
  • The aft-left emergency exit of the cabin-pressure warning-light panel (20WN1) flashes.

On the aft-right emergency exit:
  • The aft-right emergency exit of the cabin-pressure warning-light panel (20WN2) flashes.
2.On the MCDU:
  • On the AIDS PARAM LABEL CALL-UP page, enter parameter label call-up 026/1/124 00 with the alphanumeric keys (related to FWC bus L1 LABEL 124 sdi 00).
On the MCDU:
  • The parameter label call-up is shown on the bottom of the display (scratchpad).
  • Push line select key 1L or 4L to get the parameter label call-up.
  • The parameter label call-up is shown on the data field with all information.
  • Wait for five seconds.
  • Make sure that bit 21 is set to 1.
3.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is set to DISARMED.

4.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the OFF position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light flashes.
5.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the ON position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light does not flash.
6.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 switches to the OFF position.
In the cabin, on all doors:
  • The cabin-pressure red warning-light flashes.
7.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the cabin-pressure detection pressure-switch (14WN).
On all the passenger/crew doors and emergency exits:
  • The cabin-pressure red warning-light goes off.

On the MCDU:
  • Make sure that the bit related to parameter label call-up 026/1/124/00 bit 21 is set to 0.
8.On the MCDU:

  • Push the MCDU MENU mode key.
  • The MCDU MENU page comes into view.
Subtask 52-73-00-710-053-I ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
   (1) Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.Connect the 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure-switch (14WN).
On the forward-left passenger/crew door:
  • The cabin-pressure warning-light of the forward-left door panel (16WN1) flashes.

On the forward-right passenger/crew door:
  • The cabin-pressure warning-light of the forward-right door panel (16WN2) flashes.

On the aft-left passenger/crew door:
  • The cabin-pressure warning-light of the aft-left door panel (17WN1) flashes.

On the aft-right passenger/crew door:
  • The cabin-pressure warning-light of the aft-right door panel (17WN2) flashes.

On the aft-left emergency exit:
  • The aft-left emergency exit warning-light (20WN1) flashes.

On the aft-right emergency exit:
  • The aft-right emergency exit warning-light (20WN2) flashes.
2.On the MCDU:
  • On the AIDS PARAM LABEL CALL-UP page, enter parameter label call-up 026/1/124/00 with the alphanumeric keys (related to FWC bus L1 LABEL 124 sdi 00).
On the MCDU:
  • The parameter label call-up is shown on the bottom of the display (scratchpad).
  • Push line select key 1L or 4L to get the parameter label call-up.
  • The parameter label call-up is shown on the data field with all the information.
  • Wait for five seconds.
  • Make sure that bit 21 is set to 1.
3.In the cabin, on all the doors:
  • Make sure that the slide arming lever is set to the DISARMED position.

4.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 control switches to the ON position.
In the cabin, on all the doors:
  • The red CABIN PRESSURE warning-light does not flash.
5.On ENG panel 115VU:
  • Set the ENG MASTER 1 and ENG MASTER 2 control switches to the OFF position.
In the cabin, on all the doors:
  • The red CABIN PRESSURE warning-light flashes.
6.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the cabin-pressure detection pressure-switch (14WN).
On all the passenger/crew doors and emergency exits:
  • The red CABIN PRESSURE warning light goes off.

On the MCDU:
  • Make sure that bit 21 related to parameter label call-up 026/1/124/00 is set to 0.
7.On the MCDU:

  • Push the MCDU MENU mode key.
  • The MCDU MENU page comes into view.
Subtask 52-73-00-710-053-M ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
   (1) Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.Connect a 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure-switch (14WN).
On the forward left passenger/crew door:
  • The forward-left door cabin-pressure warning-light panel (16WN1) flashes.

On the forward right passenger/crew door:
  • The forward-right door cabin-pressure warning-light panel (16WN2) flashes.

On the aft left passenger/crew door:
  • The aft-left door cabin-pressure warning-light panel (17WN1) flashes.

On the aft right passenger/crew door:
  • The aft-right door cabin-pressure warning-light panel (17WN2) flashes.
2.On the MCDU:
  • On the AIDS PARAM LABEL CALL-UP page, enter the parameter label call-up 026/1/124/00 with the alphanumeric keys (related to FWC bus L1 LABEL 124 sdi 00 ).
On the MCDU:
  • The parameter label call-up is shown on the bottom of the display (scratchpad).
  • Push the line key 1L or 4L to get the parameter label call-up.
  • The parameter label call-up is shown on the data field with all information.
  • Wait for five seconds.
  • Make sure that the bit 21 is set to 1.
3.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is in DISARMED position.

4.On the ENG panel 115VU:
  • Put the ENG MASTER 1 or 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
5.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the ON position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light does not flash.
6.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
7.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the pressure switch (14WN).
On all the passenger/crew doors:
  • The red CABIN PRESSURE warning light goes off.

On the MCDU:
  • Make sure that the bit related to the parameter label call-up 026/1/124/00 bit 21 is set to 0.
8.On the MCDU:

  • Push the MCDU MENU mode key.
  • The MCDU MENU page comes into view.
Subtask 52-73-00-710-053-N ** ON A/C NOT FOR ALL
A. Operational Test of the Cabin Overpressure Warning-System
   (1) Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.Connect a 98D52703000000 CONNECTOR SHUNT to the connector of the cabin-pressure detection pressure-switch (14WN).
On the forward left passenger/crew door:
  • The forward-left door cabin-pressure warning-light panel (16WN1) flashes.

On the forward right passenger/crew door:
  • The forward-right door cabin-pressure warning-light panel (16WN2) flashes.

On the aft left passenger/crew door:
  • The aft-left door cabin-pressure warning light-panel (17WN1) flashes.

On the aft right passenger/crew door:
  • The aft-right door cabin-pressure warning light-panel (17WN2) flashes.

On the forward left emergency exit:
  • The forward-left emergency exit cabin-pressure warning-light panel (19WN1) flashes.

On the forward right emergency exit:
  • The forward-right emergency exit cabin-pressure warning-light panel (19WN2) flashes.

On the aft left emergency exit:
  • The aft-left emergency exit cabin-pressure warning-light panel (20WN1) flashes.

On the aft right emergency exit:
  • The aft-right emergency exit cabin-pressure warning-light panel (20WN2) flashes.
2.On the MCDU:
  • On the AIDS PARAM LABEL CALL-UP page, enter the parameter label call-up 026/1/124/00 with the alphanumeric keys (related to FWC bus L1 LABEL 124 sdi 00).
On the MCDU:
  • The parameter label call-up is shown on the bottom of the display (scratchpad).
  • Push the line key 1L or 4L to get the parameter label call-up.
  • The parameter label call-up is shown on the data field with all information.
  • Wait for five seconds.
  • Make sure that the bit 21 is set to 1.
3.In the cabin, on all doors:
  • Make sure that the SLIDE ARMING lever is set in DISARMED position.

4.On the ENG panel 115VU:
  • Put the ENG MASTER 1 or 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
5.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the ON position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light does not flash.
6.On the ENG panel 115VU:
  • Put the ENG MASTER 1 and 2 switches to the OFF position.
In the cabin, on all doors:
  • The red CABIN PRESSURE warning light flashes.
7.Disconnect the 98D52703000000 CONNECTOR SHUNT from the connector of the pressure switch (14WN).
On all the passenger/crew doors and emergency exits:
  • The red CABIN PRESSURE warning light goes off.

On the MCDU:
  • Make sure that the bit related to the parameter label call-up 026/1/124/00 bit 21 is set to 0.
8.On the MCDU:

  • Push the MCDU MENU mode key.
  • The MCDU MENU page comes into view.
5. Close-up
Subtask 52-73-00-420-053-A
A. Installation of Components
WARNING: DO NOT OPEN THE RADOME IF THE WIND SPEED IS MORE THAN 25 KNOTS.
   (1) Remove the CAP - BLANKING from the electrical connector.
   (2) Connect the connector of the cabin-pressure detection pressure-switch (14WN).
Subtask 52-73-00-865-062-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VULIGHTING/EMER LT/CABIN2WLH06
49VULIGHTING/EMER LT/CABIN1WLH05
** ON A/C NOT FOR ALL
49VULIGHTING/EMER LT/CABIN2WLH04
49VULIGHTING/EMER LT/CABIN1WLH03
** ON A/C ALL
122VULIGHTING/CABIN/EMER/LT3WLV07
Subtask 52-73-00-410-051-B ** ON A/C NOT FOR ALL
C. Close Access
   (1) Obey the special precautions after the work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-004).
   (2) Make sure that the applicable passenger/crew door or emergency exit is closed (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
   (3) Remove the access platform(s).
Subtask 52-73-00-410-051-C ** ON A/C NOT FOR ALL
C. Close Access
   (1) Obey the special precautions after the work on the door (Ref. AMM TASK 52-10-00-860-002).
   (2) Make sure that the applicable passenger/crew door is closed (Ref. AMM TASK 52-10-00-410-001).
   (3) Remove the access platform(s).
Subtask 52-73-00-410-051-G ** ON A/C NOT FOR ALL
C. Close Access
   (1) Obey the special precautions after the work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-004).
   (2) Make sure that the applicable passenger/crew door or emergency exit is closed (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
   (3) Remove the access platform(s).
Subtask 52-73-00-410-051-H ** ON A/C NOT FOR ALL
C. Close Access
   (1) Obey the special precautions after the work on the door or emergency exit (Ref. AMM TASK 52-10-00-860-001) (Ref. AMM TASK 52-22-00-860-004).
   (2) Make sure that the applicable passenger/crew door or emergency exit is closed (Ref. AMM TASK 52-10-00-410-001) (Ref. AMM TASK 52-22-00-410-002).
   (3) Remove the access platform(s).
Subtask 52-73-00-410-051-J ** ON A/C NOT FOR ALL
C. Close Access
   (1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
   (2) For the passenger/crew door:
     (a) Obey the special precautions after work on the door (Ref. AMM TASK 52-10-00-860-002).
     (b) Make sure that applicable passenger/crew door 831, 841, 832 or 842 is closed (Ref. AMM TASK 52-10-00-410-001).
   (3) For the emergency exit:
     (a) Obey the special precautions after work on the emergency exit door (Ref. AMM TASK 52-22-00-860-004).
     (b) Make sure that applicable emergency exit 835 or 845 is closed (Ref. AMM TASK 52-22-00-410-001).
   (4) Remove the access platform(s).
   (5) Make sure that the work area is clean and clear of tools and other items.
Subtask 52-73-00-410-051-K ** ON A/C NOT FOR ALL
C. Close Access
   (1) Obey the special precautions after the work on the door (Ref. AMM TASK 52-10-00-860-002).
   (2) Make sure that the applicable passenger/crew door is closed (Ref. AMM TASK 52-10-00-410-001).
Subtask 52-73-00-862-054-A
D. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 06:08:25 UTC
"Aviabrain" 2025