Refuel Gallery - Uncommanded Fuel Transfer From One Wing To The Other Wing

TASK 28-25-00-810-810-A
Refuel Gallery - Uncommanded Fuel Transfer From One Wing To The Other Wing

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes

VALVE-AIR INLET [161QM]
VALVE-AIR INLET [162QM]
air inlet pipe installation
refuel gallery (fuel pipes and connections)
refuel-gallery air inlet-valve

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 12-11-28-650-003	Pressure Refuel with Automatic Control
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
AMM 28-00-00-000-001	Removal of the Fuel Pipes
AMM 28-00-00-400-001	Installation of the Fuel Pipes
AMM 28-25-00-650-001	Pressure Defuel
AMM 28-25-00-869-001	Fuel Transfer
AMM 28-25-57-000-001	Removal of the Air-Inlet Valve
AMM 28-25-57-400-001	Installation of the Air-Inlet Valve
AMM 31-32-00-860-001	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page
AMM 31-60-00-860-001	EIS Start Procedure

3. Fault Confirmation
Subtask 28-25-00-865-055-A

A. Table of the circuit breakers referred to in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	FUEL/FQI/CHAN/1	1QT	A13
121VU	FUEL/FQI/CHAN/2	2QT	M27

Subtask 28-25-00-710-059-C ** ON A/C NOT FOR ALL

B. Test
(1) If necessary, refuel, defuel or transfer fuel AMM 12-11-28-650-003 AMM 28-25-00-650-001 or AMM 28-25-00-869-001 to get the fuel load in the wing tanks as follows:

on the side that the FQI is seen (or reported) to decrease - to FULL
on the side that the FQI is seen (or reported) to increase - to between a maximum of 910 kg (2000 lb) and a minimum of 750 kg (1660 lb)
the center tank - Not Applicable.

(2) Set the fuel pumps to OFF.
(3) On the ECAM FUEL System Page monitor, the left and right wing tank FQIs

NOTE: The resolution of the individual FQI tank values shown is 10 kg (20 lb).

(a) If the FQIs remain the same for an acceptable period:

maintenance steps are not necessary.

(b) If the wing tank that was filled to full is seen to decrease (and the fuel transfers to the other wing):

go to Para. 4.A.

Subtask 28-25-00-710-059-D ** ON A/C NOT FOR ALL

B. Procedure
(1) If the intercell transfer valve system (status):
(a) Is known to be serviceable, go to step (10).
(b) Is not known:
1 Make sure that the left and right wing tank inner cells contain more than 1500 kg (3300 lb) of fuel. If necessary, refuel, defuel or transfer fuel AMM 12-11-28-650-003 AMM 28-25-00-650-001 or AMM 28-25-00-869-001.

NOTE: These inner cell fuel levels are necessary to let the FQIC do the section of the power on FQIS/FLSS BITE test that includes the intercell transfer valves (28-15-00).

NOTE: The wing tank fuel load has to be reconfigured in step (10) and possibly again at the end of this procedure. Do not let the fuel tanker go unless you are sure that you will not require it again.

(2) Do the power on BITE test of the FQIS/FLSS as follows:
(a) If the FQIS is not energized:
1 Close the C/Bs 1QT and 2QT.
2 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-861-002.
(b) If the FQIS is energized, reset the FQIC as follows:
1 Open the C/Bs 1QT and 2QT.
2 Wait 5 seconds.
3 Close the C/Bs 1QT and 2QT.

NOTE: For the FQIC to do a (new) power up BITE test, a power supply interrupt (interval) of more than 5 seconds is necessary. This gives the current status of the FQIS/FLSS components.

(3) Do the EIS Start Procedure (ECAM only) AMM 31-60-00-860-001.
(4) On the ECAM control panel, push (in) the FUEL P/BSW.
(5) Make sure that the FUEL page shows on the ECAM lower display unit.
(6) Wait 60 seconds.
(7) Continue as follows:

NOTE: The FUEL page FQIs will show XXs in amber color for 35 seconds during the FQIC power up BITE test and the intercell transfer valves can be seen to move.

(a) Do the procedure to get access to the SYSTEM REPORT/TEST menu page AMM 31-32-00-860-001.
(b) When the SYSTEM REPORT/TEST menu page comes into view, push the line key adjacent to FUEL.
(c) When the FUEL menu page 1 comes into view, push the NEXT PAGE key on the MCDU keyboard to see the FUEL menu page 2.

NOTE: If a menu has more than one page (shown by the more to come symbol > on the top line, right side of the MCDU display) each operation of the NEXT PAGE key on the MCDU keyboard will cause the next page to be shown. When the last page of any menu is shown, operation of the NEXT PAGE key will cause the first page to be shown.

(d) When the FUEL menu page 2 comes into view, push the line key adjacent to:

FQIS STATUS, for 06 FQIC Software Standard
FLSS STATUS, for 07 or later FQIC Software Standard.

(8) Examine the applicable FQIS/FLSS STATUS Page.
(9) If a 281500 FUEL INTERCELL TRANSFER message:

is shown, trouble-shoot the identified LRU and then do the step (10)
is not shown, do the step (10).

(10) If necessary, refuel, defuel or transfer fuel AMM 12-11-28-650-003 AMM 28-25-00-650-001 or AMM 28-25-00-869-001 to get the fuel load in the left and right wings as follows:

the outercell - to FULL
the innercell - to between a maximum of 910 kg (2000 lb) and a minimum of 750 kg (1660 lb)
the center tank - Not Applicable.

NOTE: The fuel surface, in the inner cells, at these fuel levels will be below the Rib 15 but above the low level sensors that cause (initiate) the intercell transfer valves to open.

(11) Set the fuel pumps to OFF.
(12) On the ECAM FUEL System Page monitor:

the outercells FQIs
the innercells FQIs.

NOTE: The resolution of the individual FQI tank values shown is 10 kg (20 lb).

(a) If the FQIs remain the same for an acceptable period:

maintenance steps are not necessary.

(b) If the outercell FQI is seen to decrease to between approximately 110 kg (240 lb) and 120 kg (260 lb):

go to Para. 4.A.

NOTE: The kg and lb FQI values given in step (12)(b) are not direct equivalents but have been rounded off to match the resolution of the displays.

4. Fault Isolation
Subtask 28-25-00-810-059-B ** ON A/C NOT FOR ALL

A. Procedure
(1) On the side that the outercell FQI is seen to decrease:
(a) Replace the VALVE-AIR INLET [161QM] ( VALVE-AIR INLET [162QM] ) AMM 28-25-57-000-001 and AMM 28-25-57-400-001.
(b) Do a visual inspection of the air inlet pipe installation between the air inlet valve 161QM (162QM) and pipe line connection at the Rib 15 (Ref. IPC 28-25-05-31).
Look for damage, a failure or incorrect installation.
1 Repair or replace all the unserviceable pipes and connections.
(2) If, an inner cell drains to the other wing:
(a) Do a visual inspection of the air inlet pipe installation between the pipe line connection at the Rib 15 and the banjo connection to the refuel gallery (Ref. IPC 28-25-05-31).
1 Repair or replace all the unserviceable pipes and connections.
(b) Get access to the refuel gallery (fuel pipes and connections) between the Rib 1 and the Rib 15 AMM 28-00-00-000-001.

NOTE: The damage limits for fuel pipes and fuel line shrouds are given in the Fuel Pipe Repair Manual (Ref. FPRM Description) and (Ref. FPRM Check).

(c) Do a visual inspection of the refuel gallery (fuel pipes).
(d) If the source of the fuel leak (damage, failure or incorrect installation) cannot be found, remove all the refuel gallery pipes AMM 28-00-00-000-001.
(e) Do a visual inspection and test of the refuel gallery (fuel pipes) (Ref. FPRM).
(f) Repair (Ref. FPRM) or replace all the unserviceable fuel pipes and connections AMM 28-00-00-400-001.
(3) Do the check given in Para. 3.B.

Subtask 28-25-00-810-059-C ** ON A/C NOT FOR ALL

A. Procedure
(1) On the side that the wing tank FQI is seen to decrease:
(a) Get access to the refuel-gallery air inlet-valve installation adjacent to the refuel coupling or the refuel coupling blanking plate (Ref. IPC 28-25-05-26).
(b) Do a visual inspection of the air inlet valve, look for damage, a failure or incorrect installation. If necessary:
1 Dismantle the banjo coupling.
2 Clean the banjo body, the banjo bolt and the ball-seal.
3 Do a check to make sure that the component parts are in a serviceable condition.
4 If necessary, replace all items that are not serviceable.
5 Assemble the valve and install on the refuel gallery.
(c) Get access to the refuel gallery air inlet-valve air inlet pipe installation between the valve at Rib 15 to the outboard side of Rib 21.
(d) Do a visual inspection of the refuel-gallery air inlet-valve pipe (tube flexible) and replace, if necessary.
(e) Get access to the refuel gallery (fuel pipes and connections) between Rib 1 and Rib 15. AMM 28-00-00-000-001.

NOTE: The damage limits for fuel pipes and fuel line shrouds are given in the Fuel Pipe Repair Manual (Ref. FPRM Description) and (Ref. FPRM Check).

(f) Do a visual inspection of the refuel gallery (fuel pipes).
(g) If the source of the fuel leak (damage, failure or incorrect installation) cannot be found, remove all the refuel gallery pipes AMM 28-00-00-000-001.
(h) Do a visual inspection and test of the refuel gallery (fuel pipes) (Ref. FPRM).
(i) Repair (Ref. FPRM) or replace all the unserviceable fuel pipes and connections AMM 28-00-00-400-001.
(2) Do the check given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:28:43 UTC