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R  1 If the valve is (stays) in the open position, replace the_ 
R  VALVE-REFUEL, L WING TK (7QU) (VALVE-REFUEL, R WING TK (8QU)) 
R  (Ref. AMM TASK 28-25-51-000-001) and (Ref. AMM TASK 28-25-51-
R  400-001). 
R  2 If the valve is in the closed position (or if the valve is_ 
R  replaced in step 1_) do an operational test of the applicable 
R  wing-tank refuel valve 70QU(8QU) (to see if it can open and 
R  close) (Ref. AMM TASK 28-25-00-710-003). 
R  3 If there is a malfunction of the refuel valve 7QU(8QU) and/or_ 
R  related sub-systems, refer to the Troubleshooting Fault 
R  Symptoms List (for the related Task number) and do the 
R  necessary troubleshooting. 
R  (4) Do an Inspection of the Tank Venting System items that follow (Ref. 
R  AMM TASK 28-12-00-200-001): 
R  (a) The VALVE-FLOAT VENT, LEFT WING (212QM) (VALVE-FLOAT VENT, RIGHT 
R  WING (213QM)) and replace, if necessary, (Ref. AMM TASK 28-12-43-
R  000-003) and (Ref. AMM TASK 28-12-43-400-003). 
R  (b) The L(R) wing-tank vent-pipe/duct and replace, if necessary, all 
R  sections that are unserviceable (example, damaged or blocked). 
R  (5) Replace the L(R) wing-tank overpressure protector (Ref. AMM TASK 28-
R  12-46-000-001) and (Ref. AMM TASK 28-12-46-400-001).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 225
 Aug 01/05 CES 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 226

 

R  (6) If, when all the tests and inspections are complete: 
R 
R  - the cause(s) of the operation (broken/damaged) of the overpressure 
R  protector installed on access panel 540PB(640PB) has been found 
R  (and all the related unserviceable LRUs replaced) refuel the 
R  aircraft and return it to service 
R 
R  - no cause for the operation (broken/damaged) of the overpressure 
R  protector access panel 540PB(640PB) can be seen (or found) send 
R  AIRBUS a report of the incident.

 Aug 01/05 CES

 

 WING CENTER TANK EXTERNAL VENTILATING SYSTEM - FAULT ISOLATION PROCEDURES
_________________________________________________________________________
 TASK 28-13-00-810-801
 Fuel - Leak Shows at Drain Mast
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 1. Possible Causes
_______________
 - incorrect assembly

 - damage

 - fuel sealant

 - unserviceable seal

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
28-11-00-810-801 Fuel - Leak Monitor 500QM (Center Tank/Wingbox) Shows Leakage AMM 28-11-00-200-002 Check Fuel Leak Monitor for Evidence of Fuel Leakage and Correct Closure of the Valve
 AMM 28-22-00-210-001  Check APU Fuel-Pump System for Leakage from Shroud
 Drain Mast and APU Compartment Drain Mast with APU
 Fuel Pump running

 AMM 28-22-00-710-001  Operational Test of the APU Fuel-Pump System on
 Ground to Purge the Fuel Line
 AMM 28-22-00-790-002 Leak Test of the APU Fuel Line
 AMM 28-22-47-000-001 Removal of the APU Fuel Line
 AMM 28-22-47-400-001 Installation of the APU Fuel Line
 AMM 28-25-00-650-001 Pressure Defuel
 AMM 51-76-12-300-001 Local Repair of the Fuel Tank Sealant
 AMM 51-76-12-300-002 Repair of the Fuel Tank Fillet
 SIL 57-0086

 3. Fault Confirmation
__________________
 A. Test
 (1) If you have a small or intermittent leak go to step 3.

 (2) If you have a large leak:

 (a) Place a container (drum - 40 gall) under the drain mast.

 (b) If necessary, defuel the aircraft (Ref. AMM TASK 28-25-00-650-001).

 

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-13-00∞∞∞∞∞∞∞∞∞∞Page 201
　
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