Reactivation of the RH Wing Anti-Ice Control Valve from the OPEN position

TASK 30-11-00-440-004-A
Reactivation of the RH Wing Anti-Ice Control Valve from the OPEN position

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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

FIN: 10DL

1. Reason for the Job
MMEL 30-11-01A
WING ANTI-ICE CONTROL VALVE

NOTE: The wing anti-ice control valve is an interchangeable part.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
622AB, 622WB
622YB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 30-11-51-000-001-A	Removal of the Wing Anti-Ice Control-Valve
TASK 30-11-51-400-001-A	Installation of the Wing Anti-Ice Control-Valve
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-008-A	Removal of the Access Panel
TASK 57-41-37-400-002-A	Installation of the Pressure Relief Panels
TASK 57-41-37-400-008-A	Installation of the Access Panel
Wing Anti-Ice Control Valve (SAS 911-002A) - Component Location ** ON A/C NOT FOR ALL
Wing Anti-Ice Control Valve (38E93-X) - Component Location ** ON A/C NOT FOR ALL
Wing Anti-Ice Control Valve (SAS 911-002A) - Component Location ** ON A/C NOT FOR ALL
Wing Anti-Ice Control Valve (38E93-X) - Component Location ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 30-11-00-941-065-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Before you do work on the Ice Protection system, put WARNING NOTICE(S) in position to tell persons not to operate the:

Pneumatic system
Engines
Slats
APU.

(3) Install a 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control panel.
(4) On panel 191DB, put a WARNING NOTICE(S) in position to tell persons not to pressurize the bleed air system.

Subtask 30-11-00-865-067-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C ALL
49VU	ANTI ICE/WING/CTL	2DL	C02
49VU	ANTI ICE/WING/MONG	1DL	C01
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 30-11-00-010-060-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT) in position below zone 622.
(2) Remove the access panel 622WB (Ref. AMM TASK 57-41-37-000-008).

NOTE: If more access is necessary, remove the access panel 622AB (Ref. AMM TASK 57-41-37-000-004).

Subtask 30-11-00-010-060-C ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below zone 622.
(2) Remove access panel 622YB (Ref. AMM TASK 57-41-37-000-004).

4. Procedure
Subtask 30-11-00-440-057-A

A. Replace the Wing Anti-Ice Control-Valve
(1) If you know that the deactivated wing anti-ice control valve is defective, replace the defective valve (Ref. AMM TASK 30-11-51-000-001) (Ref. AMM TASK 30-11-51-400-001).

Subtask 30-11-00-440-056-A

B. Trouble Shoot the Wing Anti-Ice Control-Valve (for part number SAS 911-002A)

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) If you do not know the cause of the defect, do these subsequent steps:
(a) Remove and discard the lockwire from the bolt (1).
(b) Remove the bolt (1) from the indicator (2).
(c) Install the bolt (1) in the stowage position.
(d) Safety the bolt (1) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(e) Slowly operate the indicator (2) with your hand to make sure that it moves freely.

Subtask 30-11-00-440-059-A

C. Troubleshooting of the Wing-Anti-Ice Control-Valve (for part number 38E93-X)
(1) If you do not know the cause of the defect, do the subsequent steps.
(2) If the deactivation of the wing-anti-ice control-valve was done with the locking plate (15):
(a) Push the locking plate (15) to its middle position.

NOTE: The locking plate (15) has three positions:

When in its middle position, the locking plate (15) is unlocked.
When pushed fully left or fully right, the locking plate (15) locks the rod (14).

(b) Make sure that you hear a click when you put the locking plate (15) in the correct position.
(c) Slowly operate the rod (14) with your hand to make sure that it moves freely.
(3) If the deactivation of the wing-anti-ice control-valve was done with the locking screw (10):

(a) Remove and discard the lockwire from the locking screw (10).
(b) Remove the locking screw (10) from the locking hole (11) of the indicator (12).
(c) Install the locking screw (10) in the stowage position. Safety the locking screw (10) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(d) Slowly operate the indicator (12) with your hand, to make sure that its mechanical mechanism operates correctly.
(e) Make sure that the indicator (12) points to the CLOSED position.

Subtask 30-11-00-865-072-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ANTI ICE/WING/CTL	2DL	C02
49VU	ANTI ICE/WING/MONG	1DL	C01
121VU	APU/APU/CTL	2KD	L42

5. Close-up
Subtask 30-11-00-860-067-A

A. Aircraft Configuration
(1) Make an applicable entry in the aircraft technical log.

Subtask 30-11-00-410-058-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) If removed, install the access panel 622AB (Ref. AMM TASK 57-41-37-400-002).
(3) Install the access panel 622WB (Ref. AMM TASK 57-41-37-400-008).

Subtask 30-11-00-410-058-C ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 622YB (Ref. AMM TASK 57-41-37-400-002).

Subtask 30-11-00-865-073-A

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
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 30-11-00-942-061-A

D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:28:17 UTC