Restoration of the Fire Extinguishing System (FES) after Activation

TASK 26-23-00-200-005-A
Restoration of the Fire Extinguishing System (FES) after Activation

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: DO NOT GO INTO A CARGO COMPARTMENT AFTER DISCHARGE OF THE FIRE EXTINGUISHING SYSTEM (FES) UNTIL YOU KNOW THAT THE AIR IS SAFE TO BREATHE. KEEP A CARGO COMPARTMENT DOOR OPEN FOR A MINIMUM OF 30 MINUTES AFTER THE FLOW OF EXTINGUISHING AGENT STOPS. THIS WILL MAKE SURE THAT THERE IS A GOOD FLOW OF AIR THROUGH THE CARGO COMPARTMENT. THERE IS A RISK OF SUFFOCATION IF YOU DO NOT OBEY THESE PRECAUTIONS.

ZONE: 150
ZONE: 160
ZONE: 170
FIN: 4005WX ** ON A/C NOT FOR ALL
FIN: 4010WX ** ON A/C NOT FOR ALL
FIN: 4015WX ** ON A/C NOT FOR ALL
FIN: 4020WX ** ON A/C NOT FOR ALL
FIN: 5010WM ** ON A/C NOT FOR ALL
FIN: 5011WM ** ON A/C NOT FOR ALL
FIN: 5014WM ** ON A/C NOT FOR ALL
FIN: 5015WM ** ON A/C NOT FOR ALL
FIN: 5016WM ** ON A/C NOT FOR ALL
FIN: 5017WM ** ON A/C NOT FOR ALL
FIN: 5040WM ** ON A/C NOT FOR ALL
FIN: 5041WM ** ON A/C NOT FOR ALL
FIN: 5044WM ** ON A/C NOT FOR ALL
FIN: 5045WM ** ON A/C NOT FOR ALL
FIN: 5046WM ** ON A/C NOT FOR ALL
FIN: 5047WM ** ON A/C NOT FOR ALL

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	ACCESS PLATFORM 2M (6 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
170	AFT CAB U/FLOOR COMPT AFT BHD OF BULK
131CC, 231VF
161DW
162AW
132MW
826
132SW
825

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-54-12-000-002-A	Removal of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-002-A	Installation of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 26-16-15-000-001-A	Removal of the Cargo-Compartment Smoke Detectors
TASK 26-16-15-400-001-A	Installation of the Cargo-Compartment Smoke Detectors
TASK 26-23-00-200-001-A	Check of Fire-Extinguishing Lines for Leakage and Obstruction
TASK 26-23-00-200-002-A	-Remove Halon Filter, Check Valve and Diaphragm -Inspect Halon Filter -Do a Detailed Inspection of Check Valve -Do a Detailed Inspection of Diaphragm -Reinstall Halon Filter, Check Valve and Diaphragm
TASK 26-23-00-710-001-A	Operational Test of the Cargo-Compartment Fire-Extinguishing System
TASK 26-23-00-710-003-A	Check Firing Circuit Continuity and Perform Operational Check of Priority Switching
TASK 26-23-00-710-003-A-01	Check Firing Circuit Continuity and Perform Operational Check of Priority Switching
TASK 26-23-00-720-001-A	Check Firing Circuit Continuity
TASK 26-23-00-720-001-A-01	Check Firing Circuit Continuity
TASK 26-23-14-000-001-A	Removal of the Halon Filter
TASK 26-23-14-000-002-A	Removal of the Halon Filter
TASK 26-23-14-400-001-A	Installation of the Halon Filter
TASK 26-23-14-400-002-A	Installation of the Halon Filter
TASK 26-23-18-000-001-A	Removal of the Pressure Reducer
TASK 26-23-18-000-002-A	Removal of the Pressure Reducer
TASK 26-23-18-400-001-A	Installation of the Pressure Reducer
TASK 26-23-18-400-002-A	Installation of the Pressure Reducer
TASK 26-23-21-000-001-A	Removal of the Check Valve
TASK 26-23-21-000-002-A	Removal of the Check Valve
TASK 26-23-21-400-001-A	Installation of the Check Valve
TASK 26-23-21-400-002-A	Installation of the Check Valve
TASK 26-23-25-000-001-A	Removal of the Diaphragm
TASK 26-23-25-000-002-A	Removal of the Diaphragm in the Aft Cargo Compartment
TASK 26-23-25-400-001-A	Installation of the Diaphragm
TASK 26-23-25-400-002-A	Installation of the Diaphragm in the Aft Cargo Compartment
TASK 26-23-41-000-004-A	Removal of the Cargo Fire-Extinguisher Bottle
TASK 26-23-41-000-004-B	Removal of the Cargo Fire-Extinguisher Bottle
TASK 26-23-41-400-004-A	Installation of the Cargo Fire-Extinguisher Bottle
TASK 26-23-41-400-004-B	Installation of the Cargo Fire-Extinguisher Bottle
TASK 26-23-42-000-001-A	Removal of the Cargo Fire-Extinguisher Bottle
TASK 26-23-42-400-001-A	Installation of the Cargo Fire-Extinguisher Bottle
TASK 31-32-00-860-013-A	Procedure to Get Access to the SYSTEM REPORT/TEST/INFO SYS Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
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
TASK 53-22-12-000-001-A	Removal of the Cabin Floor Panels

3. Job Set-up
Subtask 26-23-00-860-052-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network (Ref. AMM TASK 24-42-00-861-001)
(2) If applicable, do a reset of ventilation controller 10HN:
(a) Open circuit breakers 2HN and/or 31HN for more than 5 seconds, then close the circuit breakers.

Subtask 26-23-00-860-052-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network (Ref. AMM TASK 24-42-00-861-001).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) If applicable, do a reset of ventilation controller 10HN:
(a) Open circuit breakers 2HN and/or 31HN for more than 5 seconds, then close the circuit breakers.
(b) Get access to the post flight report (Ref. AMM TASK 31-32-00-860-013) to find out:

which bottle(s) has(have) released
which compartment or fire extinguisher line is affected
when the incident has occured.

Subtask 26-23-00-865-070-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/SDCU/CHAN1	11WQ	C06
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C05
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
122VU	AIR COND/SDCU/CHAN2	12WQ	T18
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19

Subtask 26-23-00-010-059-A ** ON A/C NOT FOR ALL

C. Get Access

(1) Open the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(2) Set the CARGO COMPT LIGHT switch 6LU to the ON position.
(3) Remove the sidewall panel 132MW (Ref. AMM TASK 25-54-12-000-003).

Subtask 26-23-00-010-059-B ** ON A/C NOT FOR ALL

C. Get Access

(1) Open the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(2) Set the CARGO COMPT LIGHT switch 6LU to the ON position.
(3) Remove the sidewall panel 132SW (Ref. AMM TASK 25-54-12-000-003).

Subtask 26-23-00-010-059-D ** ON A/C NOT FOR ALL

C. Get Access

Subtask 26-23-00-010-059-E ** ON A/C NOT FOR ALL

C. Get Access

(1) Open the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(2) Set the CARGO COMPT LIGHT switch 8LU to the ON position.
(3) Remove the sidewall panel 162AW (Ref. AMM TASK 25-55-12-000-003).

Subtask 26-23-00-010-059-G ** ON A/C NOT FOR ALL

C. Get Access

(1) Open the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(2) Set the CARGO COMPT LIGHT switch 8LU to the ON position.
(3) Remove the partition panel 161DW (Ref. AMM TASK 25-55-12-000-001).

Subtask 26-23-00-010-059-H ** ON A/C NOT FOR ALL

C. Get Access

Subtask 26-23-00-010-059-J ** ON A/C NOT FOR ALL

C. Get Access

(1) If an Additional Center Tank (ACT) is installed:
(a) Remove cabin floor panel 231VF (Ref. AMM TASK 53-22-12-000-001).
(b) Remove ceiling panel 131CC from the cargo compartment (Ref. AMM TASK 25-54-12-000-002).
(c) Remove sidewall panel 132MW (Ref. AMM TASK 25-54-12-000-003).
(2) If the ACT is not installed:
(a) Put an ACCESS PLATFORM 2M (6 FT) in position at zone 825.
(b) Open forward cargo compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(c) Set CARGO COMPT LIGHT switch 6LU to ON.
(d) Remove sidewall panel 132MW (Ref. AMM TASK 25-54-12-000-003).

Subtask 26-23-00-020-054-A ** ON A/C NOT FOR ALL

D. Removal of the FES Components
(1) Remove the fire extinguishing bottle (Ref. AMM TASK 26-23-41-000-004).

Subtask 26-23-00-020-054-B ** ON A/C NOT FOR ALL

D. Removal of the FES Components

NOTE: Regarding to the result of Para. (A.)(3)(b) restorate only the fire extinguishing system line that has released.

(1) Remove the fire extinguishing bottle (Ref. AMM TASK 26-23-41-000-004).
(2) Remove the halon filter (Ref. AMM TASK 26-23-14-000-001).
(3) Remove the pressure reducer (Ref. AMM TASK 26-23-18-000-001).
(4) Remove the check valve (Ref. AMM TASK 26-23-21-000-001).
(5) Remove the diaphragm (Ref. AMM TASK 26-23-25-000-001).

Subtask 26-23-00-020-054-C ** ON A/C NOT FOR ALL

D. Removal of the FES Components
(1) Remove the fire extinguisher bottle (Ref. AMM TASK 26-23-42-000-001).

Subtask 26-23-00-020-054-D ** ON A/C NOT FOR ALL

D. Removal of the FES Components
(1) Remove only the components of the FES line that released the fire extinguishing agent.
(2) Refer to paragraph A.(3)(b) to find which FES line released the agent.
(3) Remove the fire extinguisher bottles (Ref. AMM TASK 26-23-42-000-001).
(4) Remove the halon filter (Ref. AMM TASK 26-23-14-000-002).
(5) Remove the pressure reducer (Ref. AMM TASK 26-23-18-000-002).
(6) Remove the check valve (Ref. AMM TASK 26-23-21-000-002).
(7) Remove the diaphragm (Ref. AMM TASK 26-23-25-000-002).

4. Procedure
Subtask 26-23-00-210-059-A ** ON A/C NOT FOR ALL

A. Visual Check of the toggle switches 5WX and 6WX
(1) On the cargo-smoke overhead panel 22VU:
(a) Make sure that the guards of the toggle switches 5WX and 6WX are not bent in AGENT 1 or AGENT 2 position and do not push the toggle switches in AGENT1 or AGENT2 position.
(b) Lift the guards of the toggle switches 5WX and 6WX and make sure that the toggle switches do not move freely and are in the neutral positions.
(c) Lower the guards of the toggle switches 5WX and 6WX.

Subtask 26-23-00-220-051-A ** ON A/C NOT FOR ALL

B. Inspection of the Fire Extinguishing System Components
(1) Cleaning of the flexible hoses
(a) Flush the inside of the flexible hoses with Non Aqueous Cleaner-General - - (Material No.08BAA9) . Do the operation three or four times to remove all contamination.
(b) Dry the inner and outer side of the flexible hoses with clean compressed air.

Subtask 26-23-00-220-051-B ** ON A/C NOT FOR ALL

B. Inspection of the Fire Extinguishing System Components
(1) Clean the flexible hoses / pipes:
(a) Flush the flexible hoses / pipes with Non Aqueous Cleaner-General - - (Material No.08BAA9) . Do this step three or four times to remove all contamination.
(b) Dry the inner and outer side of the flexible hoses / pipes:

CAUTION: DO NOT USE COMPRESSED AIR WITHOUT THE APPROVED PROTECTION. THE AIR PRESSURE MUST BE NO MORE THAN 30 PSI (206.8 kPa). COMPRESSED AIR CAN CAUSE INJURY TO PERSONS WITHOUT GOGGLES OR A FACE SHIELD.

1 Dry the inner and outer side of the flexible hoses / pipings with clean compressed air.
(2) Do the detailed inspection of the diaphragm, halon filter and check valve (Ref. AMM TASK 26-23-00-200-002).

NOTE: After the inspection, if you find that these components are serviceable, you can keep them to install again.

Subtask 26-23-00-160-050-A

C. Cleaning of the Cargo-Compartment Smoke Detectors
(1) Remove only those smoke detectors, where halon is released from the fire extinguisher bottle (Ref. AMM TASK 26-16-15-000-001).
(2) Send the cargo-compartment smoke detectors to the workshop for cleaning.
(3) Install serviceable cargo-compartment smoke detectors (Ref. AMM TASK 26-16-15-400-001).

Subtask 26-23-00-420-054-A ** ON A/C NOT FOR ALL

D. Installation of the FES Components
(1) Install a serviceable fire extinguishing bottle (Ref. AMM TASK 26-23-41-400-004).

NOTE: The fire extinguishing bottle must be charged.

Subtask 26-23-00-420-054-B ** ON A/C NOT FOR ALL

D. Installation of the FES Components
(1) Install serviceable fire extinguishing bottles (Ref. AMM TASK 26-23-41-400-004).

NOTE: The fire extinguishing bottle must be charged.

(2) Install a serviceable halon filter (Ref. AMM TASK 26-23-14-400-001).
(3) Install a serviceable pressure reducer (Ref. AMM TASK 26-23-18-400-001).
(4) Install a serviceable check valve (Ref. AMM TASK 26-23-21-400-001).
(5) Install a serviceable diaphragm (Ref. AMM TASK 26-23-25-400-001).

Subtask 26-23-00-420-054-C ** ON A/C NOT FOR ALL

D. Installation of the FES Components
(1) Install a serviceable fire extinguisher bottle (Ref. AMM TASK 26-23-42-400-001).

NOTE: The fire extinguisher bottle must be charged.

Subtask 26-23-00-420-054-D ** ON A/C NOT FOR ALL

D. Installation of the FES Components
(1) Install serviceable fire extinguisher bottles (Ref. AMM TASK 26-23-42-400-001).

NOTE: Fire extinguisher bottles must be charged.

(2) Install a serviceable halon filter (Ref. AMM TASK 26-23-14-400-002).
(3) Install a serviceable pressure reducer (Ref. AMM TASK 26-23-18-400-002).
(4) Install a serviceable check valve (Ref. AMM TASK 26-23-21-400-002).
(5) Install a serviceable diaphragm (Ref. AMM TASK 26-23-25-400-002).

Subtask 26-23-00-865-071-A

E. 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
49VU	AIR COND/SDCU/CHAN1	11WQ	C06
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C05
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
122VU	AIR COND/SDCU/CHAN2	12WQ	T18
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19

Subtask 26-23-00-720-054-A ** ON A/C NOT FOR ALL

F. Test
(1) Do the check of the fire extinguisher lines for leakage and obstruction (Ref. AMM TASK 26-23-00-200-001).

Subtask 26-23-00-710-054-A ** ON A/C NOT FOR ALL

G. Operational Tests
(1) Do the operational test of the cargo-compartment fire-extinguishing system (Ref. AMM TASK 26-23-00-710-001).
(2) Do the check of the firing circuit continuity (Ref. AMM TASK 26-23-00-720-001).

Subtask 26-23-00-710-054-B ** ON A/C NOT FOR ALL

G. Operational Tests
(1) Do the operational test of the cargo-compartment fire-extinguishing system (Ref. AMM TASK 26-23-00-710-001).
(2) Do the check of fire circuit continuity and operational check of priority switching (Ref. AMM TASK 26-23-00-710-003).

5. Close-up
Subtask 26-23-00-410-064-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(3) Set the CARGO COMPT LIGHT switch 6LU to the OFF position.
(4) Close the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).

Subtask 26-23-00-410-064-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 132SW (Ref. AMM TASK 25-54-12-400-003).
(3) Set the CARGO COMPT LIGHT switch 6LU to the OFF position.
(4) Close the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).

Subtask 26-23-00-410-064-E ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 162AW (Ref. AMM TASK 25-55-12-400-003).
(3) Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4) Close the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).

Subtask 26-23-00-410-064-F ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the partition panel 161DW (Ref. AMM TASK 25-55-12-400-001).
(3) Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4) Close the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).

Subtask 26-23-00-410-064-H ** ON A/C NOT FOR ALL

A. Close Access
(1) If an Additional Center Tank (ACT) is installed:
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Install sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(c) Install ceiling panel 131CC on the cargo compartment (Ref. AMM TASK 25-54-12-400-002).
(d) Install cabin floor panel 231VF (Ref. AMM TASK 53-22-12-000-001).
(2) If the ACT is not installed:
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Install sidewall panel 132MW (Ref. AMM TASK 25-54-12-000-003).
(c) Set CARGO COMPT LIGHT switch 6LU to OFF.
(d) Close forward cargo compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(e) Remove the access platform(s).

Subtask 26-23-00-860-053-A

B. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 06:45:52 UTC