3. Job Set-up
__________ Subtask 28-12-00-941-055
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
Put an access platform in position below the access panel 550CB, 650CB.
4. Procedure
_________ (Ref. Fig. 401/TASK 28-12-00-991-005) Subtask 28-12-00-440-050
A. Re-activation of the Overpressure Protector 46QM(47QM)
(1)
Replace the applicable overpressure protector 46QM(47QM) (Ref. TASK 28-12-45-000-001) and (Ref. TASK 28-12-45-400-002).
(2)
Make an inspection of the tank venting system to find the cause of the overpressure protector operation (Ref. TASK 28-12-00-200-001).
(3)
Make an entry in the aircraft technical log that the overpressure protector is re-activated.
5. Close-up
________ Subtask 28-12-00-942-055
A. 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 warning notice(s).
(4)
Remove the access platform(s).
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
TASK 28-12-00-040-002
De-activation of the Overpressure Protector 102QM(103QM)
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
__________________
Refer to the MMEL TASK: 28-12-01-A)
Tank Venting System
Overpressure Protectors
Between Inner and Outer Cell
(FAA Only)
NOTE : The overpressure protectors are deactivated by disconnection of the
____ forward intercell transfer valve actuators 9QP (10QP). The transfer valves are first opened by a simulated low level signal. The actuators are then disconnected to leave the forward transfer valves in the open position.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific polythene bag
No specific safety barriers
No specific warning notice
No specific access platform 3 m (9 ft. 10 in.)
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B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure 28-12-00-991-007 Fig. 402
3. Job Set-up
__________ Subtask 28-12-00-941-058
A. Safety Precautions
(1)
Put a warning notice in the cockpit to tell persons not to operate the slat system.
(2)
Make sure that the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER (98D27803500001) is on the slat/flap control lever.
(3) Put the safety barriers in position. Subtask 28-12-00-650-054
B. Fuel Configuration
(1) Refuel the aircraft (Ref. TASK 12-11-28-650-003) so that the wing tank outer cells are full.
Subtask 28-12-00-010-057
C. Get Access
(1)
Put the access platform below the transfer valve actuator 9QP(10QP), zone 520(620).
(2)
Remove the access panels:
-FOR 9QP
remove 522KB
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-FOR 10QP
remove 622KB.
Subtask 28-12-00-860-054
D. Aircraft Maintenance Configuration
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