Operational Test of the Outflow Valve Closing in Ditching Configuration

TASK 21-31-00-710-004-A
Operational Test of the Outflow Valve Closing in Ditching Configuration

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: MAKE SURE THAT THE FWD AVIONICS ACCESS DOOR 811 IS OPEN WITH A WARNING PLACARD ATTACHED TO IT. THE WARNING NOTICE MUST TELL PERSONS NOT TO CLOSE THE DOOR. THIS PREVENTS ACCIDENTAL PRESSURIZATION OF THE AIRCRAFT.

ZONE: 210
ZONE: 260

1. Reason for the Job
Refer to the MPD TASK: 213100-03
OPERATIONAL CHECK OF OUTFLOW VALVE CLOSING IN DITCHING CONFIGURATION
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
260	AFT CABIN UTILITY AREA

C. Referenced Information

REFERENCE	DESIGNATION
TASK 21-31-00-100-001-A	Cleaning of the Moveable Seals of the Outflow-Valve
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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 21-31-00-861-064-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 21-31-00-865-067-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
122VU	AIR COND/CAB PRESS/CTL/MAN	3HL	Y23
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

Subtask 21-31-00-860-068-A

C. Outflow Valve Seals Inspection
(1) Do a check of the outflow valve moveable seals installed in the outflow valve gates:

they must move freely with a light finger pressure.
you must clean the seals if they do not move freely (Ref. AMM TASK 21-31-00-100-001).

Subtask 21-31-00-865-054-A

D. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
122VU	AIR COND/CAB PRESS/CTL/MAN	3HL	Y23
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

Subtask 21-31-00-860-057-A

E. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) Make sure that on the CABIN PRESS section of the panel 25VU:

the MODE SEL pushbutton switch is in the AUTO position (the FAULT and the MAN legends are off).

NOTE: Make sure there are no persons near the outflow valve before you start this test.

4. Procedure
Subtask 21-31-00-710-054-A

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

A. Operational Test of the Outflow Valve Closing in Ditching Configuration

ACTION	RESULT
1.On the ECAM control panel 11VU: push the PRESS pushbutton switch.	On the ECAM lower display unit: the CAB PRESS page comes on.
2.On the CABIN PRESS panel 25VU: lift the black guard and push the DITCHING pushbutton switch.	On the CABIN PRESS panel 25VU: the white ON pushbutton switch light comes on.
	On the ECAM lower display unit: the outflow valve symbol closes.
3.On the CABIN PRESS panel 25VU: lift the black guard and push the DITCHING pushbutton switch.	On the CABIN PRESS panel 25VU: the white ON pushbutton switch light goes off.
	On the ECAM lower display unit: the outflow valve symbol opens.

5. Close-up
Subtask 21-31-00-860-058-A

A. Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).

Subtask 21-31-00-862-061-A

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

[Rev.10 from 2021] 2026.04.01 08:26:15 UTC