Removal of the Anti-Ice Valve Filter

TASK 30-11-51-000-002-A
Removal of the Anti-Ice Valve Filter

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.

1. Reason for the Job

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	BAG - PLASTIC
No specific	AR	CAP - BLANKING
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [10DL] (VALVE-WING ANTI ICE CONTROL, R)
622AB
622YB
FOR [9DL] (VALVE-WING ANTI ICE CONTROL, L)
522YB
522AB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
Anti-Ice Valve Filter (SAS911-002A and SAS912-002A) ** ON A/C NOT FOR ALL
Anti-Ice Valve Filter (38E93-X) ** ON A/C NOT FOR ALL
Anti-Ice Valve Filter (SAS911-002A and SAS912-002A) ** ON A/C NOT FOR ALL
Anti-Ice Valve Filter (38E93-X) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 30-11-51-941-055-A

A. Safety Precautions
(1) On the flap and slat control lever, on panel 114VU, install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

(2) Put the WARNING NOTICE(S) in positions that follow before you start the work on the ice protection system:

On the high-pressure ground-power connections, to tell persons not to pressurize the pneumatic system
In the cockpit, to tell persons not to operate the engines or APU control switch
On the panel 30VU, to tell persons not to pressurize the bleed air system
On the panel 114VU, to tell persons not to operate the slat controls.

(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 30-11-51-865-053-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	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 30-11-51-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT) in position below zone 522(622).
(2) Remove the access panels (Ref. AMM TASK 57-41-37-000-004):
(a) FOR [9DL] (VALVE-WING ANTI ICE CONTROL, L)
Remove access panel 522AB.
(b) FOR [10DL] (VALVE-WING ANTI ICE CONTROL, R)
Remove access panel 622AB.

Subtask 30-11-51-010-052-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below zone 522(622).
(2) Remove the access panels (Ref. AMM TASK 57-41-37-000-004):
(a) FOR [9DL] (VALVE-WING ANTI ICE CONTROL, L)
Remove access panel 522YB.
(b) FOR [10DL] (VALVE-WING ANTI ICE CONTROL, R)
Remove access panel 622YB.

4. Procedure
Subtask 30-11-51-020-051-A

WARNING: DO NOT TOUCH THE ANTI-ICE DUCTS UNTIL THEY ARE COOL. THE TEMPERATURE OF THE DUCTS STAYS HIGH FOR SOME TIME AFTER THE ENGINE STOPS.

A. Removal of the Anti-Ice Valve Filter (for the Part Numbers (PN) SAS911-002A and SAS912-002A)

NOTE: The anti-ice control valve with the PN SAS912-002A is not approved for the Extended Range Operations for Two-Engine Aeroplanes (ETOPS).

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) Remove and discard the lockwire from the caps (1) and (2).
(2) Remove the caps (1) and (2).
(3) Remove and discard the O-ring (3).
(4) Remove the filter (4).
(5) Put the CAP - BLANKING in the opening of the anti-ice control valve.
(6) Remove and discard the O-ring (5).
(7) Put the filter (4) in a clean BAG - PLASTIC.

Subtask 30-11-51-020-054-A

B. Removal of the Anti-ice Valve Filter (for part number 38E93-X)

WARNING: DO NOT TOUCH THE ANTI-ICE DUCTS UNTIL THEY ARE COOL. THE TEMPERATURE OF THE DUCTS STAYS HIGH FOR SOME TIME AFTER THE ENGINE STOPS.

(1) Remove the cap (13) from the filter (12).

(2) Cut and discard the lockwire from the filter (12) and the anti-ice control valve.
(3) Remove the filter (12) from the anti-ice control valve.
(4) Put the PLUG - BLANKING in the opening of the anti-ice control valve.
(5) Remove the packings (10) and (11), and discard them.
(6) Put the filter (12) in a clean BAG - PLASTIC.

[Rev.10 from 2021] 2026.04.01 00:28:30 UTC