Operational Test of Emergency Ram-Air Inlet and Flow Control Valve Closing in Ditching Configuration

TASK 21-55-00-710-002-A
Operational Test of Emergency Ram-Air Inlet and Flow Control Valve Closing in Ditching Configuration

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.

WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR INLET FLAPS. THE MOVEMENT OF THE RAM AIR INLET FLAPS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 215500-02
OPERATIONAL CHECK OF EMERGENCY RAM AIR INLET AND FLOW CONTROL VALVE CLOSING IN DITCHING CONFIGURATION
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-33-21-618-001-A-01	Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02	Pre-conditioning with the APU
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 21-55-00-861-051-A

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

Subtask 21-55-00-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/RAM/AIR/INLET	1HZ	D10
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
** ON A/C NOT FOR ALL
49VU	AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC	52HH	D08
** ON A/C NOT FOR ALL
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS2	4HK	V20
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS1	3HK	V19
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS2	2HK	V18
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS1	1HK	V17
122VU	AIR COND/PACK TEMP/CTL SYS1/2/115VAC	21HH	W22
122VU	AIR COND/PACK TEMP/CTL SYS1/2/28VDC	23HH	W21
122VU	AIR COND/PACK TEMP/CTL SYS1/1/115VAC	1HH	X22
122VU	AIR COND/PACK TEMP/CTL SYS1/1/28VDC	3HH	X21
122VU	AIR COND/PACK TEMP CTL SYS2/2/28VDC	24HH	Y21
122VU	AIR COND/PACK TEMP CTL SYS2/2/115VAC	22HH	Y20
122VU	AIR COND/PACK TEMP CTL SYS2/1/28VDC	4HH	Y19
122VU	AIR COND/PACK TEMP CTL SYS2/1/115VAC	2HH	Y18
** ON A/C ALL
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22
** ON A/C NOT FOR ALL
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/115VAC	53HH	W22
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/28VDC	55HH	W21
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/115VAC	49HH	X22
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/28VDC	51HH	X21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/28VDC	56HH	Y21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/115VAC	54HH	Y20
122VU	AIR COND/TEMP CTL SYS 1/CHAN B/115VAC	50HH	Y18

4. Procedure

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

Subtask 21-55-00-869-052-A

A. 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 the BLEED page is shown on the ECAM lower display unit.
(3) Make sure that the PACK 1 and the PACK 2 pushbutton switches on the AIR COND panel 30VU are in the ON position.

Subtask 21-55-00-618-050-A

B. Do the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).

Subtask 21-55-00-710-051-A

C. Do this test

ACTION	RESULT
1.On the AIR COND panel 30VU: lift the black guard and push the RAM AIR pushbutton switch.	On the AIR COND panel 30VU: the white ON pushbutton switch light comes on.
	On the ECAM lower display unit: the ram air inlet symbol opens (maximum operation time 20 s).
	On the ECAM upper display unit: the green RAM AIR ON memo message 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 ram air inlet symbol closes, the pack flow control valve symbols close.
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 ram air inlet symbol opens, the pack flow control valve symbols open.
4.On the AIR COND panel 30VU: lift the black guard and push the RAM AIR pushbutton switch.	On the AIR COND panel 30VU: the white ON pushbutton switch light goes off.
	On the ECAM lower display unit: the ram air inlet symbol closes.
	On the ECAM upper display unit: the green RAM AIR ON memo message goes off.

5. Close-up
Subtask 21-55-00-869-053-A

A. Aircraft Maintenance Configuration
(1) Stop the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) Remove the WARNING NOTICE(S).
(4) Close the avionics-bay access door 811.

Subtask 21-55-00-862-051-A

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

[Rev.10 from 2021] 2026.04.02 06:11:32 UTC