Operational Check of the Recirculation System When the Main Fuel-Pump 2 does not Operate

TASK 28-21-00-040-001-A
Operational Check of the Recirculation System When the Main Fuel-Pump 2 does not Operate

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.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

1. Reason for the Job
MMEL 28-21-01B
WING TANK PUMP
2. Job Set-up Information
A. 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 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page

3. Job Set-up
Subtask 28-21-00-860-086-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 28-21-00-865-063-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	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41

4. Procedure
Subtask 28-21-00-040-050-A ** ON A/C NOT FOR ALL

A. Operational Check of the Recirculation System When the Main Fuel-Pump 2 does not Operate
(1) Do this test:

ACTION	RESULT
1.On the MCDU: Get access to the ENG page (Ref. AMM TASK 31-32-00-860-012).
2.On maintenance panel 50VU: Make sure that the ENG/FADEC GND PWR 1 pushbutton switch is released (out).	On maintenance panel 50VU: The ON light of the ENG/FADEC GND PWR 1 pushbutton switch is on.
3.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the FADEC 1A indication.	The ENGINE 1 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 1 CHANNEL A page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
CAUTION: OBEY THE SAFETY PRECAUTIONS. NOTE: The tests that follow are usually done without an air pressure supply to the engine starter motor (non-engine motor test). If air pressure is supplied, the engine fan blades will turn during the tests.
4.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put the MASTER 1 switch to the ON position.	This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
5.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication FRV, J7 ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
6.On engine panel 115VU: Put MASTER 1 switch to the OFF position.
7.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown
Push (in) the key adjacent to the FADEC 1B indication.	The ENGINE 1 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 1 CHANNEL B page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
8.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put MASTER 1 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** when the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
9.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication FRV, J8 ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
10.On engine panel 115VU: Put MASTER 1 switch to the OFF position.
11.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown.
12.On maintenance panel 50VU:	On maintenance panel 50VU:
Push (in) the ENG/FADEC GND PWR 1 pushbutton switch.	The ON light of the ENG/FADEC GND PWR 1 pushbutton switch goes off.
Make sure that the ENG/FADEC GND PWR 2 pushbutton switch is released (out).	The ON light of the ENG/FADEC GND PWR 2 pushbutton switch is on.
13.On the MCDU:	On the MCDU:
Push (in) the key adjacent to FADEC 2A indication.	The ENGINE 2 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 2 CHANNEL A page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>.
14.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put MASTER 2 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
15.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication FRV, J7 ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
16.On engine panel 115VU: Put MASTER 2 switch to the OFF position.
17.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown.
Push (in) the key adjacent to the FADEC 2B indication	The ENGINE 2 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 2 CHANNEL B page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
18.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position
Put MASTER 2 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
19.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication FRV, J8 ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
20.On engine panel 115VU: Put MASTER 2 switch to the OFF position.
21.On maintenance panel 50VU:	On maintenance panel 50VU:
Push (in) ENG/FADEC GND PWR 2 pushbutton switch.	The ON light of the ENG/FADEC GND PWR 2 psuhbutton switch goes off.
22.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST page is shown.	On the MCDU:
Push (in) the key adjacent to the FUEL indication.	The FUEL page is shown.
Push (in) the NEXT PAGE key.	The second FUEL page is shown.
Push (in) the key adjacent to the FLSS STATUS indication.	The FLSS STATUS page is shown.
Make sure that none of these messages are shown: L SURGE SENSOR 28QJ1 R SURGE SENSOR 28QJ2 L INN TEMP SENSOR 29QJ1 R INN TEMP SENSOR 29QJ2 L OUT TEMP SENSOR 30QJ1 R OUT TEMP SENSOR 30QJ2 L LO LEVEL SENSOR 38QJ1 R LO LEVEL SENSOR 38QJ2.
Push (in) the key adjacent to RETURN until the CFDS MENU page is shown.
Push (in) the MCDU MENU key.	The MCDU MENU is shown.

Subtask 28-21-00-040-050-C ** ON A/C NOT FOR ALL

A. Operational Check of the Recirculation System When the Main Fuel-Pump 2 does not Operate
(1) Do this test:

ACTION	RESULT
1.On the MCDU: Get access to the ENG page (Ref. AMM TASK 31-32-00-860-012).
2.On maintenance panel 50VU: Make sure that the ENG/FADEC GND PWR 1 pushbutton switch is released (out).	On maintenance panel 50VU: The ON light of the ENG/FADEC GND PWR 1 pushbutton switch is on.
3.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the FADEC 1A indication.	The ENGINE 1 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 1 CHANNEL A page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON> .
CAUTION: OBEY THE SAFETY PRECAUTIONS. NOTE: The tests that follow are usually done without an air pressure supply to the engine starter motor (non-engine motor test). If air pressure is supplied, the engine fan blades will turn during the tests.
4.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put the MASTER 1 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE.
5.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication J7, FRV (SOL1), ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
6.On engine panel 115VU: Put the MASTER 1 switch to the OFF position.
7.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown.	On the MCDU:
Push (in) the key adjacent to the FADEC 1B indication.	The ENGINE 1 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 1 CHANNEL B page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
8.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position
Put the MASTER 1 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
9.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication J8, FRV (SOL2), ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
10.On engine panel 115VU: Put the MASTER 1 switch to the OFF position.
11.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown.
12.On maintenance panel 50VU:	On maintenance panel 50VU:
Push (in) the ENG/FADEC GND PWR 1 pushbutton switch. Make sure that the ENG/FADEC GND PWR 2 pushbutton switch is released (out).	The ON light of the ENG/FADEC GND PWR 1 pushbutton switch goes off. The ON light of the ENG/FADEC GND PWR 2 pushbutton switch is on.
13.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the FADEC 2A indication	The ENGINE 2 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication	The FADEC TEST ENGINE 2 CHANNEL A page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
14.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put the MASTER 2 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
15.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication J7, FRV (SOL1), ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
16.On engine panel 115VU: Put the MASTER 2 switch to the OFF position.
17.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST ENG page is shown.	On the MCDU:
Push (in) the key adjacent to the FADEC 2B indication.	The ENGINE 2 MAIN MENU is shown.
Push (in) the key adjacent to the FADEC TEST indication.	The FADEC TEST ENGINE 2 CHANNEL B page is shown.
Push (in) the key adjacent to the PUSH BUTTON TO <START TEST> indication.	This indication is shown: PUT THE MODE SELECTOR SWITCH TO <NORM> PLACE THE MASTER LEVER SWITCH TO <ON>
18.On engine panel 115VU: Make sure that the MODE switch (6KS) is in the NORM (center) position.
Put the MASTER 2 switch to the ON position.	On the MCDU: This indication is shown: *** WARNING * * TEST ACTIVE *** When the test is stopped, this indication is shown: A NON-MONITORING TEST WAS PERFORMED DUE TO INSUFFICIENT STARTER AIR PRESSURE OR DUE TO A STARTER AIR VALVE FAILURE
19.On the MCDU:	On the MCDU:
Push (in) the key adjacent to the DISPLAY NON-MONITORING TEST RESULTS indication.	The test results are shown.
Make sure that the indication J8, FRV (SOL2), ECU is not shown.
Push (in) the key adjacent to the RETURN indication.	The TEST COMPLETE page is shown.
20.On engine panel 115VU: Put the MASTER 2 switch to the OFF position.
21.On maintenance panel 50VU:	On maintenance panel 50VU:
Push (in) the ENG/FADEC GND PWR 2 pushbutton switch.	The ON light of the ENG/FADEC GND PWR 2 pushbutton switch goes off.
22.On the MCDU: Push (in) the key adjacent to the RETURN indication until the SYSTEM REPORT/TEST page is shown.	On the MCDU:
Push (in) the key adjacent to the FUEL indication.	The FUEL page is shown.
Push (in) the key adjacent to the FLSS STATUS indication.	The FLSS STATUS page is shown.
Make sure that none of these messages are shown: L SURGE SENSOR 28QJ1 R SURGE SENSOR 28QJ2 L TEMP SENSOR 29QJ1 R TEMP SENSOR 29QJ2 L LO LEVEL SENSOR 38QJ1 R LO LEVEL SENSOR 38QJ2
Push (in) the key adjacent to RETURN until the CFDS MENU page is shown.
Push (in) the MCDU MENU key.	The MCDU MENU is shown.

5. Close-up
Subtask 28-21-00-860-087-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(2) Put a PLACARD in the cockpit to tell persons that the main fuel pump 2 is not in operation.
(3) Put an applicable entry in the aircraft log book.

Subtask 28-21-00-942-083-A ** ON A/C NOT FOR ALL

B. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:17:22 UTC