(2)
 Remove the HOOK-COVER (RIB2-SURGE DOORS) from the applicable wing tank surge door 540BZ, 640BZ.

 (3)
 Carefully close the applicable wing tank surge door 540BZ, 640BZ.

 (4)
 Install the applicable access panel 540AB, 640AB (Ref. TASK 57-27-11-400-001).

 Subtask 28-11-41-650-073
 D. Fuel Configuration
 (1) Refuel the applicable wing tank to approximately 1000 kg (2204.6220 lb) (Ref. TASK 12-11-28-650-003).
 Subtask 28-11-41-790-053
 E. Leak Test
 (1) Examine the water drain valve (5) and the bottom skin joint for leaks.
 5. Close-up
________ Subtask 28-11-41-650-074
 A. Fuel Configuration
 (1) Refuel, defuel or transfer fuel as necessary (Ref. TASK 12-11-28-650-001), (Ref. TASK 28-25-00-650-003) or (Ref. TASK 28-25-00-869-001).
 1EFF : ALL 1 28-11-41Page 440 1 1 May 01/04R 1 1 1CES 1

 Subtask 28-11-41-942-053
 B. Removal of Equipment
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Remove the safety barriers.

 (3)
 Remove the access platform(s).

 (4)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 1EFF : ALL 1 28-11-41Page 441 1 1 May 01/04R 1 1 1CES 1

 TASK 28-11-41-000-006 Removal of the Outer Valve 21QM (22QM), 23QM (24QM), 25QM (26QM) 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. WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
 No specific container 1 l (0.2641 USgal)
 No specific access platform 4 m (13 ft. 1 in.)

 B. Referenced Information -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------28-00-00-910-001 Fuel Safety Procedures

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 28-11-41-991-004 Fig. 404
 **ON A/C 301-399,

 28-11-41-991-004-A Fig. 404A
 1EFF : ALL 1 28-11-41Page 442 1 1 Aug 01/05 1 1 1CES 1 **ON A/C ALL

 3. Job Set-up
__________
 Subtask 28-11-41-941-056

 A. Safety Precautions
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.

_______
 (1) You must obey the fuel safety precautions (Ref. TASK 28-00-00-910-001) when you do work on the fuel system.
 (2) Put the safety barriers in position.
 Subtask 28-11-41-010-060

 B. Get Access
 (1)
 Put the access platform in position below the applicable water drain valve.

 (2)
 Put a container below the water drain valve.

 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 404/TASK 28-11-41-991-004)
 **ON A/C 301-399,

 (Ref. Fig. 404A/TASK 28-11-41-991-004-A)
 **ON A/C ALL

 Subtask 28-11-41-020-053
 A. Removal of the Outer Valve
 (1)
 Remove the outer valve (4) from the water drain valve (2).

 (2)
 Collect the fuel from the water drain valve (2) in the container.

 1EFF : ALL 1 28-11-41Page 443 1 1 Aug 01/05 1 1 1CES 1

 Outer Valve - Wing Tank
 Figure 404/TASK 28-11-41-991-004

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-11-41Page 444 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1

R  Outer Valve - Wing Tank 
R  Figure 404A/TASK 28-11-41-991-004-A 
R 1EFF :  301-399,  1  28-11-41 Page 445 
1  1  May 01/04
 1  1
 1CES  1

 (3) Remove and discard the O-ring (3).
　
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