B. Fuel Configuration
 (1)
 Defuel the applicable fuel tank (Ref. TASK 28-25-00-650-001).

 (2)
 Drain the remaining fuel from the applicable fuel tank (Ref. TASK 28-25-00-650-003).

 1EFF : ALL 1 28-12-46Page 602 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,

 Subtask 28-12-46-010-050
 C. Get Access
 (1)
 Put the access platform below the applicable zone 540(640).

 (2)
 Remove the overpressure protector outlet 540HB(640HB) (Ref. TASK 28-12-46-000-001).

 **ON A/C 301-399,
 Subtask 28-12-46-010-050-A
 C. Get Access
 (1)
 Put the access platform below the applicable zone 540(640).

 (2)
 Remove the overpressure protector outlet 540PB(640PB) (Ref. TASK 28-12-46-000-001).

 **ON A/C ALL
 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 601/TASK 28-12-46-991-001)
 **ON A/C 301-399,

 (Ref. Fig. 601A/TASK 28-12-46-991-001-A)
 1EFF : ALL 1 28-12-46Page 603 1 1 Aug 01/05 1 1 1CES 1

 Outlet Overpressure Protector - Inner Cell
 Figure 601/TASK 28-12-46-991-001

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-12-46Page 604 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1

R  Outlet Overpressure Protector - Wing Tank 
R  Figure 601A/TASK 28-12-46-991-001-A 
R 1EFF :  301-399,  1  28-12-46 Page 605 
1  1  May 01/04
 1  1
 1CES  1

 **ON A/C ALL
 Subtask 28-12-46-210-050
 A. Inspection of the Wing-Tank Overpressure Protector Outlet CAUTION : DO NOT APPLY PRESSURE TO THE SAFETY DISC BECAUSE IT WILL EASILY
_______
 BREAK.

 (1)
 Examine the overpressure protector outlet (2) and the extension tube

 (6) to make sure that:
 -
there is no damage

 -
there is no corrosion

 -the overpressure protector outlet (2) is correctly installed on the access panel (3).

 (2)
 Examine the nuts and the end of the bolts (4) to make sure that:

 -there is no damage
 -the sealant is in the correct condition.

 (3)
 Examine the nuts and the end of the bolts (5) to make sure that:

 -there is no damage
 -the corrosion prevention material is in the correct condition.

 (4)
 Examine the safety disc (1) to make sure that there is no damage. NOTE : For instructions to overhaul the overpressure-protector outlet

____
 assembly (Ref. CMM 281246).

 5. Close-up
________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 Subtask 28-12-46-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the overpressure protector outlet 540HB(640HB) (Ref. TASK 28-12-46-400-001).

 1EFF : ALL 1 28-12-46Page 606 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 28-12-46Page 607 1 1 May 01/04 1 1 1CES 1 INTAKE - NACA VENT - REMOVAL/INSTALLATION

R  **ON A/C 301-399, 
R  Subtask 28-12-46-410-050-A 
R  A. Close Access 
R R  (1) Make sure that the work area is clean and clear of tool(s) and other items. 
R R  (2) Install the overpressure protector outlet 540PB(640PB) (Ref. TASK 28-12-46-400-001). 
R  **ON A/C ALL
 Subtask 28-12-46-650-053
 B. Fuel Configuration
 (1) Refuel, defuel or transfer fuel as necessary (Ref. TASK 12-11-28-650-003), (Ref. TASK 28-25-00-650-001) or (Ref. TASK 28-25-00-869-001).
 Subtask 28-12-46-942-050
 C. 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.

_________________________________________
 TASK 28-12-47-000-001
 Removal of the NACA Vent Intake
 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
　
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