Operational Test of the Additional Center Tank (ACT) Automatic Transfer System

TASK 28-28-00-710-005-A
Operational Test of the Additional Center Tank (ACT) Automatic Transfer System

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

ZONE: 150
ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	AIR SOURCE 2 BAR (30 PSI) - REGULATED, FILTERED, DRY
No specific	1	GAGE 5 BAR (75 PSI) - PRESSURE
No specific	AR	ROD - NON METALLIC
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	STEPLADDER 2.0 M (6.6 FT)
98D28108658000	1	TOOL-PRESSURE TEST,ACT

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
151NC, 826

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 25-55-11-000-002-A	Removal of the Ceiling Panels in the Aft Cargo-Compartment - FR47/FR59
TASK 25-55-11-400-002-A	Installation of the Ceiling Panels in the Aft Cargo-Compartment - FR47/FR59
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-42-00-740-001-A	Status Report (BITE)
TASK 28-46-00-710-002-A	Test of the Additional Center Tank (ACT) High-Level-Sensing System
TASK 28-46-00-740-001-A	Functional (BITE) Test
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-410-001-A	Nose Gear Doors - Ground Doors Closing
TASK 32-69-00-860-802-A	Simulation of Flight with False Targets (With Aircraft on Ground)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Test Tool Arrangement ACT
Access to Test Ports T1 and T2
MLG Uplock - Schematic

3. Job Set-up
Subtask 28-28-00-860-087-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) Prepare to start with an isolated task, the simulation of flight (with aircraft on ground) (Ref. AMM TASK 32-69-00-860-802).
(3) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(4) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(5) In the cockpit, on the ECAM control panel:
(a) Push the FUEL pushbutton switch.
(6) In the cockpit, on the lower ECAM Display Unit (DU):
(a) The FUEL page comes into view.
(b) Make sure that the fuel quantity:

In the center tank is 4300 kg (9480 lb)
In the wing tanks is full.

NOTE: When you have all the necessary fuel quantities for the test:

On the ECAM display, the message FUEL ACT XFR FAULT comes into view
The ACT XFR mode pushbutton-fault-light illuminates on overhead panel 28VU.

These indications have no effect on the test.

(7) In the cockpit, on fuel control-panel 40VU:
(a) Make sure that these pushbutton switches are in the OFF position:

L TK PUMP 1
L TK PUMP 2
R TK PUMP 1
R TK PUMP 2
CTR TK L XFR
CTR TK R XFR.

(b) Make sure that the OFF lights of these pushbutton switches are on.
(8) In the cockpit, on the ECAM panel:
(a) Make sure that the fuel quantity in each installed ACT is 400 kg (882 lb).
(9) In the cockpit, on ACT control-panel 28VU:
(a) Make sure that the ACT XFR rotary switch is in the OFF position.
(b) Make sure that the FWD ACT OVRD pushbutton switch is released.
(c) Make sure that the FWD ACT FAULT indication is OFF.
(d) Make sure that the MAN light in the MODE SEL pushbutton switch is OFF.
(10) Do the high-level sensing test (Ref. AMM TASK 28-46-00-710-002).
(11) Open aft cargo-compartment-door 826 (Ref. AMM TASK 52-30-00-860-001).
(12) Open the Main Landing Gear (MLG) doors (Ref. AMM TASK 32-12-00-010-001).
(13) Open the Nose Landing Gear (NLG) doors (Ref. AMM TASK 32-22-00-010-001).

Subtask 28-28-00-865-074-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FUEL/FQI/CHAN/1	1QT	A13
49VU	ALSCU SPLY	66QJ	B10
49VU	AFMC SPLY	3QN	B08
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	FUEL/ACT AIR SOV/MAN/SPLY	64QH	J20
121VU	FUEL/ACT AIR SOV/AUTO/SPLY	63QH	J19
121VU	FUEL/ACT XFR VLV/MOT2	66QH	J18
121VU	FUEL/ACT XFR VLV/MOT1	65QH	J17
121VU	FUEL/ALSCU/HI LEVEL/SPLY	64QJ	K21
121VU	FUEL/ALSCU/SPLY	65QJ	K20
121VU	FUEL/AFMC/SPLY	4QN	K19
121VU	FUEL/INLET VLV MOT2 AUTO SP AFT 2	44QH2	K16
121VU	FUEL/INLET VLV MOT2 AUTO SP AFT 1	44QH1	K15
121VU	FUEL/INLET VLV/MOT1/AFT 2	84QH	L29
121VU	FUEL/INLET VLV/MOT1/MAN SPLY/AFT 1	46QH	L28
121VU	FUEL/FQI/CHANNEL/1 AND 2	8QT	L25
121VU	FUEL/HI/LVL/SPLY	1QJ	L24
121VU	FUEL/ACT VENT VLV/MAN/SPLY	62QH	L21
121VU	FUEL/ACT VENT VLV/AUTO/SPLY	61QH	L20
121VU	FUEL/INLET VLV MAN CTL SPLY AFT 2	81QH	L16
121VU	FUEL/INLET VLV MAN CTL SPLY AFT 1	45QH	L15
121VU	FUEL/FQI/CHAN/2	2QT	M27
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

Subtask 28-28-00-865-078-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29

4. Procedure
Subtask 28-28-00-860-088-B ** ON A/C NOT FOR ALL

A. Preparation for the Test

Test Tool Arrangement ACT ** ON A/C NOT FOR ALL

Access to Test Ports T1 and T2 ** ON A/C NOT FOR ALL

(1) In the aft cargo compartment, remove ceiling panel 151NC to get access to the test ports of the ACT pressurization system (Ref. AMM TASK 25-55-11-000-002).
(2) Connect a AIR SOURCE 2 BAR (30 PSI) - REGULATED, FILTERED, DRY maximum pressure to test port T1.
(3) Connect a GAGE 5 BAR (75 PSI) - PRESSURE maximum to test port T2.

NOTE: You can use 98D28108658000 TOOL-PRESSURE TEST,ACT as an alternative tool and connect it to test ports T1 and T2.

(4) On the refuel/defuel control-panel 800/801VU, make sure that the access door of the panel is closed.
(5) Do the flight-configuration precaution procedure (Ref. AMM TASK 32-00-00-860-001).

Subtask 28-28-00-710-058-C ** ON A/C NOT FOR ALL

WARNING: WHEN YOU USE COMPRESSED AIR:

USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.

LOOSE PARTICLES AND/OR HIGH PRESSURE AIR CAN CAUSE INJURY.

B. Test

NOTE: Airbus recommends you to keep the fuel transfer rate of approximately 74 -10 kg.min or +10 kg.min (163 -22 lb.min or +22 lb.min), with an ACT pressurization of 450 mbar (6.53 psi) and an aircraft pitch of 2 deg (2 deg).
The highest fuel transfer rate, with a maximum positive gravity-head, is calculated from these parameters:

A temperature of approximately 40 DEG.C (104 DEG.F)
The fuel quantity in ACT(s) is 2992 l (790 USgal)
The center tank is almost empty.

The lowest fuel transfer rate, with a minimum positive gravity-head, is calculated from these parameters:

A temperature of approximately -40 DEG.C (-40 DEG.F)
The ACT(s) is (are) almost empty
The fuel quantity in the center tank is 8250 l (2179 USgal).

ACTION	RESULT
1.On the ground pressure generator: Start the air supply with 1 bar (14.5 psi).	On the pressure gauge at test port T1: Make sure that the air pressure is 1 bar (14.5 psi). On the pressure gauge at test port T2: Make sure that the air pressure is 0 bar (0 psi).
WARNING: DO NOT PUT YOUR FINGERS IN THE UPLOCK MECHANISM. THIS IS DANGEROUS. MLG Uplock - Schematic ** ON A/C NOT FOR ALL Use a ROD - NON METALLIC (or an equivalent tool) to move the right MLG uplock hook to the closed and locked position.
3.Record the time when the aircraft is in the simulated flight mode.
4.Set the aircraft to the simulated flight mode while you do the test of the automatic transfer system (Ref. AMM TASK 32-69-00-860-802). NOTE: Transfer starts after 30 minutes due to time relay 113QH.	On the pressure gauge at test port T2: The air pressure increases to 0.45 -0.01 bar or +0.01 bar (6.53 -0.15 psi or +0.15 psi). NOTE: It is necessary to wait for some minutes to get the necessary air pressure at test port T2. On the FUEL page of the lower ECAM-system DU: If, Approximately 12 minutes after the simulated flight mode, the indication on the FUEL page goes out of the view, do step 5. If not, go to step 6. NOTE: The FUEL indication on the DU shows no data when the aircraft is in the simulated flight mode while you do this test.
5.If XXXX comes into view as an alternative to numbers on ECAM fuel page: Do a reset of the Fuel Quantity Indication Computer (FQIC). Open and close these circuit breakers at the same time: FUEL/FQI/CHAN/1 (FIN 1QT) FUEL/FQI/CHAN/2 (FIN 2QT) FUEL/FQI/CHANNEL/1 AND 2 (FIN 8QT).
6.Look at the FUEL page of the lower ECAM-system DU.	On the FUEL page of the lower ECAM-system DU: The indication on the FUEL page comes back into view The amber arrow comes into view The fuel level in the ACT(s) starts to decrease, and the fuel level in the center tank starts to increase at the same time The fuel level in the center tank increases until all the ACT(s) are empty When you defuel only the ACT AFT1, the arrow becomes green When the ACT AFT1 is empty, the green arrow goes out of view as transfer stops The fuel transfer stops immediately when the ACTs are empty. NOTE: The automatic fuel transfer from the ACT(s) to the center tank starts in a sequence. When the first ACT is empty of fuel, then the fuel transfer goes on with the adjacent ACT(s). NOTE: If the aircraft has ACT fuel-flow-sequence configuration B, then all the fuel will be removed from the ACT(s) by the flow sequence: ACT FWD - AFT2 - AFT1 (If all the ACT(s) are installed). If the aircraft has ACT fuel-flow-sequence configuration D, then all the fuel will be removed from the ACT(s) by the flow sequence: ACT AFT2 - FWD -AFT1 (If all the ACT(s) are installed).
7.On panel 110VU: Operate the GRAVITY GEAR EXTN handle three turns in a clockwise direction. MLG Uplock - Schematic ** ON A/C NOT FOR ALL Do a visual inspection of the uplock hooks to make sure that they are in the fully open position: NOTE: You can use a STEPLADDER 2.0 M (6.6 FT) to get the access of uplock hooks. If necessary, use a ROD - NON METALLIC (or an equivalent tool) to move the uplock hooks to the fully open position Do not apply too much force to put the uplock hooks in the fully open position. On panel 110VU: Operate the GRAVITY GEAR EXTN handle three turns in a counterclockwise direction. Put it in its normal (stowed) position.
8.Stop the isolated task related to the simulation of flight (with aircraft on ground) (Ref. AMM TASK 32-69-00-860-802).
9.On the ground pressure generator: Stop the air supply.	On the pressure gauges at test ports T1 and T2: The air pressure decreases to 0 bar (0 psi).

(1) Do the functional (BITE) test (Ref. AMM TASK 28-46-00-740-001) and the status report (BITE) (Ref. AMM TASK 28-42-00-740-001) to do the check of the correct function of the FQIC after the computer reset.

Subtask 28-28-00-080-057-A ** ON A/C NOT FOR ALL

C. Removal of the Tool
(1) Disconnect and remove the AIR SOURCE 2 BAR (30 PSI) - REGULATED, FILTERED, DRY pressure maximum from test port T1.
(2) Disconnect and remove the GAGE 5 BAR (75 PSI) - PRESSURE pressure maximum from test port T2.
(3) If connected, disconnect and remove the 98D28108658000 TOOL-PRESSURE TEST,ACT from test port T1 and T2.

5. Close-up
Subtask 28-28-00-865-195-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29

Subtask 28-28-00-860-094-B ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install ceiling panel 151NC (Ref. AMM TASK 25-55-11-400-002).
(4) Close the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
(5) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
(6) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(7) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(8) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:17:50 UTC