(2)
Install the applicable access panels:
-
for the left wing, install 522AB, 413AL, 413CL, 413EL, 414AZ, 414FR, 437AL, 471AL, 472AR
-
for the right wing, install 622AB, 423AL, 423AZ, 423CL, 423FL, 424ER, 447AL, 481AL, 482AR.
Subtask 28-21-00-942-058
E. 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.
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TASK 28-21-00-710-002
Operational Check of Wing Tank Pump Pressure Sense Line Check Valves
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 MPD TASK: 282100-01
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
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
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3. Job Set-up
__________ Subtask 28-21-00-941-071
A. Safety Precautions
(1) Put the safety barriers in position. Subtask 28-21-00-860-053
B. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Do the EIS start procedure (ECAM only) (Ref. TASK 31-60-00-860-001), then: - on the ECAM control panel (CP), push (in) the FUEL push button
switch
-make sure that the FUEL page shows on the ECAM lower display unit (DU).
(3) Make sure that each wing tank contains not less than 500 kg (1103 lb) of fuel. Refuel if necessary (Ref. TASK 12-11-28-650-003).
4. Procedure
_________ Subtask 28-21-00-710-054
A. Annunciator Light Test
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the panel 25VU: On the panel 40VU:
-
put the ANN LT test switch to - make sure that all the fuel P/BSW the TEST position lights come on
-
put the ANN LT switch to the - make sure that all the fuel P/BSW
BRT or DIM position. lights return to their initial condition.
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R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 28-21-00-710-053
B. Operational Check of the Wing Tank Pump Pressure Sense Line Check Valves (33QM, 34QM, 35QM and 36QM)
NOTE : This test is to make sure that the check valves have not failed in
____ the open position. These check valves are installed in the primary supply of the wing-tank fuel-scavenge jet-pumps. In normal operation all wing tank fuel-pumps run during flight. If one of these check valves fail in the open position, a fuel-pump failure will not be detected by the related fuel-pump pressure-switch. This is because fuel (under pressure from the active pump) has an unrestricted path to the pressure-switch of the failed pump. The unrestricted path is through the failed open check valve. This only applies to fuel-pumps in the same wing. Fuel-pump failures in the opposite wing will stay detectable.
This check is for the left tank (L TK) pumps. For the right tank (R TK) pumps, use the indications in parentheses.
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