Installation of the CABIN PRESSURE Warning-Light Panel of the Emergency Exits

TASK 52-73-22-400-003-A
Installation of the CABIN PRESSURE Warning-Light Panel of the Emergency Exits

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 832
ZONE: 834
ZONE: 835
ZONE: 842
ZONE: 844
ZONE: 845

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
832	AFT PASSENGER/CREW DOOR
834	EMERGENCY EXITS
835	MID PASSENGER/CREW DOOR
842	AFT PASSENGER/CREW DOOR
844	EMERGENCY EXITS
845	MID PASSENGER/CREW DOOR
835, 845
833, 834, 843, 844
FOR [2WN1] (IND LT-SLIDE ARMED, L EMER EXIT)
834CZ
FOR [2WN2] (IND LT-SLIDE ARMED, R EMER EXIT)
844CZ
FOR [20WN1] (WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT)
834CZ
FOR [20WN2] (WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT)
844CZ
FOR [21WN1] (IND LT-SLIDE ARMED, FWD L EMERGENCY EXIT)
833CZ
FOR [21WN2] (IND LT-SLIDE ARMED, FWD R EMERGENCY EXIT)
843CZ

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	LAMPS	AIPC 52-73-22-01-030

E. 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 25-23-47-400-013-A	Installation of the Door Linings of the RH FWD Emergency Exit Door at zone 251, or RH AFT at zone 252, or LH AFT at zone 232.
TASK 25-23-47-400-802-A	Installation of the Door Linings of the Emergency Exit, zones 251/252
TASK 52-22-00-410-002-A	Closing of the Emergency Exit Doors from the Outside
TASK 52-73-00-710-004-A	Operational Test of the Cabin Overpressure Warning-System
Emergency Exits - CABIN PRESSURE Warning-Light Panel ** ON A/C NOT FOR ALL
Emergency Exits - CABIN PRESSURE Warning-Light Panel ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-73-22-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position at applicable emergency exit 833 or 834 or 843 or 844.
(2) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002).

Subtask 52-73-22-860-050-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position at applicable emergency exit 835 or 845.
(2) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002).

Subtask 52-73-22-865-057-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

4. Procedure
Subtask 52-73-22-420-056-A ** ON A/C NOT FOR ALL

A. Installation of the Lamps

CAUTION: DO NOT TOUCH THE LAMP GLASS WITH YOUR FINGERS. THE OILS FROM YOUR SKIN WILL QUICKLY CAUSE DETERIORATION OF THE LAMP. IF YOU ACCIDENTALLY TOUCH THE LAMP GLASS, CLEAN IT WITH A LINT- FREE CLOTH. IF NECESSARY, MAKE THE CLOTH MOIST WITH WATER. DRY WITH LOW-PRESSURE COMPRESSED AIR JET. DO NOT USE ALCOHOL.

(1) Use the Textile-Lint free Cotton - (Material No.14SBA1) , and put the AIPC 52-73-22-01-030 LAMPS (3) in position on the CABIN PRESSURE warning-light panel (1).
(2) Install the lens (4) on the CABIN PRESSURE warning-light panel (1).

Subtask 52-73-22-420-053-A ** ON A/C NOT FOR ALL

B. Installation of the CABIN PRESSURE Warning-Light Panel
(1) Install the CABIN PRESSURE warning-light panel (1) on its support.
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Connect the electrical connector (6) to the electrical connector (5).

Subtask 52-73-22-865-058-A ** ON A/C NOT FOR ALL

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

Subtask 52-73-22-410-055-A ** ON A/C NOT FOR ALL

D. Installation of the Lining Panels of the Emergency Exit
(1) Install the lining panels (Ref. AMM TASK 25-23-47-400-013):
(a) FOR [2WN1] (IND LT-SLIDE ARMED, L EMER EXIT)

Lining panel 834CZ.

(b) FOR [2WN2] (IND LT-SLIDE ARMED, R EMER EXIT)

Lining panel 844CZ.

Lining panel 833CZ.

(d) FOR [21WN2] (IND LT-SLIDE ARMED, FWD R EMERGENCY EXIT)

Lining panel 843CZ.

Subtask 52-73-22-410-055-B ** ON A/C NOT FOR ALL

D. Installation of the Lining Panels of the Emergency Exit
(1) Install the lining panels (Ref. AMM TASK 25-23-47-400-802):
(a) FOR [20WN1] (WARN LT PNL-CABIN PRESSURE, AFT L EMERGENCY EXIT)

Lining panel 834CZ.

(b) FOR [20WN2] (WARN LT PNL-CABIN PRESSURE, AFT R EMERGENCY EXIT)

Lining panel 844CZ.

Subtask 52-73-22-710-050-A ** ON A/C NOT FOR ALL

E. Operational Test of the Cabin Overpressure Warning-System
(1) Do an operational test of the cabin overpressure warning-system (Ref. AMM TASK 52-73-00-710-004).

5. Close-up
Subtask 52-73-22-410-054-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close applicable emergency exit 833 or 843 or 834 or 844 (Ref. AMM TASK 52-22-00-410-002).
(3) Remove the access platform(s).

Subtask 52-73-22-410-054-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close applicable emergency exit 835 or (Ref. AMM TASK 52-22-00-410-002) 845.
(3) Remove the access platform(s).

Subtask 52-73-22-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 01:49:10 UTC