Functional Test of the ENG 1(2) FIRE Pushbutton Switch
TASK 26-21-00-720-005-A
Functional Test of the ENG 1(2) FIRE Pushbutton Switch
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 26-21-00-861-061-A Subtask 26-21-00-941-064-A
Subtask 26-21-00-720-058-A ** ON A/C NOT FOR ALL
Subtask 26-21-00-869-077-A
[Rev.10 from 2021]
2026.04.01 06:38:04 UTC
Functional Test of the ENG 1(2) FIRE Pushbutton Switch
CAUTION:
TO RESET THE ENG 1(2) APU FIRE PUSHBUTTON SWITCH:
1. Reason for the Job- PUSH THE PUSHBUTTON SWITCH FULLY IN (LATCHED POSITION).
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-33-21-618-001-A-01 | Pre-conditioning through the HP Ground Connection |
| TASK 12-33-21-618-001-A-02 | Pre-conditioning with the APU |
| TASK 12-33-21-618-001-A | Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available) |
| TASK 12-33-21-618-001-A-01 | Pre-conditioning through the HP Ground Connection |
| TASK 12-33-21-618-001-A-02 | Pre-conditioning with the APU |
| TASK 12-33-21-618-001-A-03 | Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Not Available) |
| 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 26-12-00-710-001-A | Operational Check of Loop/Squib |
| TASK 29-10-00-710-001-A | Operational Check of Hydraulic Fire Shut Off Valves and Associated Indicating System |
| TASK 31-32-00-860-004-A | Procedure to Get Access to the SYSTEM REPORT/TEST/ELEC Page |
| TASK 31-36-00-740-008-A | Access to the Parameter Call-Up Menus |
| TASK 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
Subtask 26-21-00-861-061-A Subtask 26-21-00-941-064-A
B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
(b) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 26-21-00-869-075-A (1) On the center pedestal, on the ENG panel 115VU:
(a) Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
(b) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
C. Aircraft Maintenance Configuration
(1) On the ENG panel 115VU:
(a) Make sure that the ENG/MASTER 1(2) toggle switch is at ON.
(b) Make sure that the ENG MODE selector switch is set to NORM.
(2) On the AIR COND panel 30VU:
(a) The ENG 1 BLEED and ENG 2 BLEED pushbutton switches must be pushed, the OFF legend is off.
(b) The PACK 1(2) pushbutton switch must be pushed, the OFF legend is off and the FAULT legend is on.
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or with the HP ground supply unit (Ref. AMM TASK 12-33-21-618-001).
Subtask 26-21-00-869-076-A (1) On the ENG panel 115VU:
(a) Make sure that the ENG/MASTER 1(2) toggle switch is at ON.
(b) Make sure that the ENG MODE selector switch is set to NORM.
(2) On the AIR COND panel 30VU:
(a) The ENG 1 BLEED and ENG 2 BLEED pushbutton switches must be pushed, the OFF legend is off.
(b) The PACK 1(2) pushbutton switch must be pushed, the OFF legend is off and the FAULT legend is on.
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or with the HP ground supply unit (Ref. AMM TASK 12-33-21-618-001).
D. On the overhead panel 20VU, on the ENG/APU FIRE panel 1WD, open the safety guard of the ENG 1(2) FIRE pushbutton switch.
Subtask 26-21-00-865-078-A E. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 26-21-00-865-079-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 1000EM1 (ENGINE1) | |||
| 49VU | AIR BLEED/ENG 1/CTL | 3HA1 | D12 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| FOR FIN: 1000EM2 (ENGINE2) | |||
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 2/CTL | 3HA2 | Z23 |
F. Table of the circuit breakers used in this procedure:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| FOR FIN: 1000EM1 (ENGINE1) | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG1 | 1QG | A08 |
| 121VU | FUEL/LP VALVE/MOT2/ENG1 | 3QG | M25 |
| FOR FIN: 1000EM2 (ENGINE2) | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG2 | 2QG | A09 |
| 121VU | FUEL/LP VALVE/MOT2/ENG2 | 4QG | M26 |
Subtask 26-21-00-720-058-A ** ON A/C NOT FOR ALL
A. Functional Test of the ENG 1(2) FIRE Pushbutton Switch
Subtask 26-21-00-720-058-B ** ON A/C NOT FOR ALL NOTE: You can ignore the indications other than those that follow.
| ACTION | RESULT |
|---|---|
1.On the ECAM control panel:
| On the lower ECAM DU:
|
2.On the ECAM control panel:
| On the lower ECAM DU:
|
3.On the ECAM control panel:
| On the lower ECAM DU:
|
4.On one MCDU:
| On the MCDU:
|
5.On the MCDU:
| On the MCDU:
|
6.On the MCDU:
| On the MCDU:
|
7.On the overhead circuit breaker panel 49VU:
| On the MCDU and on the lower ECAM DU:
|
8.On the ENG/APU fire panel 1WD:
| On the ENG/APU fire panel 1WD:
|
| | On the F/O and CAPT glareshield panels 130VU and 131VU:
|
| |
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU, on the FUEL page:
|
9.On the ECAM control panel:
| On the lower ECAM DU:
|
10.On the ECAM control panel:
| On the lower ECAM DU:
|
11.On the MCDU:
| On the MCDU:
|
12.On the MCDU:
| On the MCDU:
|
13.On the MCDU:
| On the MCDU:
|
14.On the ENG/APU fire panel 1WD:
| On the ENG/APU fire panel 1WD:
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU:
|
15.On the ECAM control panel:
| On the lower ECAM DU:
|
16.On the ECAM control panel:
| On the lower ECAM DU:
|
| | On the MCDU, on the LAST LEG REPORT of the AC GEN:
|
17.On the MCDU:
| On the MCDU:
|
18.On the MCDU:
| On the MCDU:
|
19.On the overhead circuit breaker panel 49VU:
| On the MCDU and on the lower ECAM DU:
|
20.On the rear circuit breaker panel 121VU:
| On the MCDU and on the lower ECAM DU:
|
21.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
22.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
23.On the overhead circuit breaker panel 49VU:
| On the lower ECAM DU:
|
24.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
25.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
| | On the F/O and CAPT glareshield panels 130VU and 131VU:
|
26.On the circuit breaker panels 49VU and 121VU:
| On the lower ECAM DU:
|
A. Functional Test of the ENG 1(2) FIRE Pushbutton Switch
Subtask 26-21-00-720-058-C ** ON A/C NOT FOR ALL NOTE: You can ignore the indications other than those that follow.
| ACTION | RESULT |
|---|---|
1.On the ECAM control panel:
| On the lower ECAM DU:
|
2.On the ECAM control panel:
| On the lower ECAM DU:
|
3.On the ECAM control panel:
| On the lower ECAM DU:
|
4.On one MCDU:
| On the MCDU:
|
5.On the MCDU:
| On the MCDU:
|
6.On the MCDU:
| On the MCDU:
|
7.On the overhead circuit breaker panel 49VU:
| On the MCDU and on the lower ECAM DU:
|
8.On the ENG/APU fire panel 1WD:
| On the ENG/APU fire panel 1WD:
|
| | On the F/O and CAPT glareshield panels 130VU and 131VU:
|
| |
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU, on the FUEL page:
|
9.On the ECAM control panel:
| On the lower ECAM DU:
|
10.On the ECAM control panel:
| On the lower ECAM DU:
|
11.On the MCDU:
| On the MCDU:
|
12.On the MCDU:
| On the MCDU:
|
13.On the MCDU:
| On the MCDU:
|
14.On the ENG/APU fire panel 1WD:
| NOTE: If the message CONFIRM APU AND ENGINES ARE NOT RUNNING comes into view, you can ignore it. On the ENG/APU fire panel 1WD:
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU:
|
15.On the ECAM control panel:
| On the lower ECAM DU:
|
16.On the ECAM control panel:
| On the lower ECAM DU:
|
17.On the MCDU:
| On the MCDU:
NOTE: If the message CONFIRM APU AND ENGINES ARE NOT RUNNING comes into view, you can ignore it. |
|
|
18.On the MCDU:
| On the MCDU:
|
19.On the MCDU:
| On the MCDU:
|
20.On the overhead circuit breaker panel 49VU:
| On the MCDU and on the lower ECAM DU:
|
21.On the rear circuit breaker panel 121VU:
| On the MCDU and on the lower ECAM DU:
|
22.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
23.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
24.On the overhead circuit breaker panel 49VU:
| On the lower ECAM DU:
|
25.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
26.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
| | On the F/O and CAPT glareshield panels 130VU and 131VU:
|
27.On the circuit breaker panels 49VU and 121VU:
| On the lower ECAM DU:
|
A. Functional Test of the ENG 1(2) FIRE Pushbutton Switch
5. Close-upNOTE: You can ignore the indications other than those that follow.
| ACTION | RESULT |
|---|---|
1.On the ECAM control panel:
| On the lower ECAM DU:
|
2.On the ECAM control panel:
| On the lower ECAM DU:
|
3.On the ECAM control panel:
| On the lower ECAM DU:
|
4.On the MCDU:
| On the MCDU:
|
5.On the MCDU:
| On the MCDU:
|
For engine 2:
| On the MCDU:
|
6.On the MCDU:
| On the MCDU:
|
7.On the overhead circuit breaker panel 49VU:
| On the MCDU and the lower ECAM DU:
|
8.On the ENG/APU fire panel 1WD:
| On the ENG/APU fire panel 1WD:
|
| | On F/O and CAPT glareshield panels 130VU and 131VU:
|
| |
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU, on the FUEL page:
|
9.On the ECAM control panel:
| On the lower ECAM DU:
|
10.On the ECAM control panel:
| On the lower ECAM DU:
|
11.On the MCDU:
| On the MCDU:
|
For engine 2:
| On the MCDU:
|
12.On the MCDU:
| On the MCDU:
|
13.On the MCDU:
| On the MCDU:
|
14.On the ENG/APU fire panel 1WD:
| NOTE: If the message CONFIRM APU AND ENGINES ARE NOT RUNNING comes into view, you can ignore it. On the ENG/APU fire panel 1WD:
|
| | On the upper ECAM DU:
|
| | On the lower ECAM DU:
|
15.On the ECAM control panel:
| On the lower ECAM DU:
|
16.On the ECAM control panel:
| On the lower ECAM DU:
|
17.On the MCDU:
| On the MCDU:
NOTE: If the message CONFIRM APU AND ENGINES ARE NOT RUNNING comes into view, you can ignore it. |
|
|
18.On the MCDU:
| On the MCDU:
|
19.On the MCDU:
| On the MCDU:
|
For engine 2:
| On the MCDU:
|
20.On the overhead circuit breaker panel 49VU:
| On the MCDU and the lower ECAM DU:
|
21.On the rear circuit breaker panel 121VU:
| On the MCDU and on the lower ECAM DU:
|
22.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
23.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
24.On the overhead circuit breaker panel 49VU:
| On the lower ECAM DU:
|
25.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
26.On the ENG/APU fire panel 1WD:
| On the lower ECAM DU:
|
| | On the upper ECAM DU:
|
| | On the F/O and CAPT glareshield panels 130VU and 131VU:
|
27.On the circuit breaker panels 49VU and 121VU:
| On the lower ECAM DU:
|
Subtask 26-21-00-869-077-A
A. Put the aircraft back to its initial configuration.
(a) On the ENG/APU FIRE panel 1WD, close the safety guard of the ENG 1(2) FIRE pushbutton switch.
(2) Do an operational test of the fire detection system (Ref. AMM TASK 26-12-00-710-001).
(3) On the ENG panel 115VU, set the ENG/MASTER 1(2) toggle switch to OFF.
(4) On the ELEC panel 35VU, release then push the GEN 1(2) pushbutton switch to reset the generator 1(2).
Subtask 26-21-00-860-061-A CAUTION:
TO RESET THE ENG 1(2) APU FIRE PUSHBUTTON SWITCH:
(1) Closing of the safety guard. - PUSH THE PUSHBUTTON SWITCH FULLY IN (LATCHED POSITION).
(a) On the ENG/APU FIRE panel 1WD, close the safety guard of the ENG 1(2) FIRE pushbutton switch.
(2) Do an operational test of the fire detection system (Ref. AMM TASK 26-12-00-710-001).
(3) On the ENG panel 115VU, set the ENG/MASTER 1(2) toggle switch to OFF.
(4) On the ELEC panel 35VU, release then push the GEN 1(2) pushbutton switch to reset the generator 1(2).
NOTE: On the MCDU, on the LAST LEG REPORT page, the indication CHECK FIRE HANDLE 1(2) RESET GEN 1(2) will go out of view at the subsequent flight.
(5) Do an operational test of the hydraulic fire shut-off valves (Ref. AMM TASK 29-10-00-710-001). B. Put the aircraft back to the serviceable condition.
(1) Stop the APU (Ref. AMM TASK 12-33-21-618-001) or stop the ground air-supply unit (Ref. AMM TASK 12-33-21-618-001).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(4) Remove the WARNING NOTICE(S).
Subtask 26-21-00-862-060-A (1) Stop the APU (Ref. AMM TASK 12-33-21-618-001) or stop the ground air-supply unit (Ref. AMM TASK 12-33-21-618-001).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(4) Remove the WARNING NOTICE(S).