Discard Cartridge

TASK 26-22-42-920-001-A
Discard Cartridge

ZONE: 313
FIN: 12WF

1. Reason for the Job
Refer to the MPD TASK: 262242-01
DISCARD CARTRIDGE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	1	BAG - ELECTROSTATIC SAFETY
No specific	1	FLASHLIGHT
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
6971-0010	1	CAP SHUNT-FIRE BOTTLE
MS25043-10DA	1	CARTRIDGE CAP

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
313	TAIL CONE APU AIR INTAKE AREA
314AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	CARTRIDGE	AIPC 26-22-04-01-055
2	CARTRIDGE	AIPC 26-22-84-01-110

D. Referenced Information

REFERENCE	DESIGNATION
TASK 26-22-42-000-001-A	Removal of the Fire-Extinguisher Bottle Cartridge
TASK 26-22-42-400-001-A	Installation of the Fire-Extinguisher Bottle Cartridge
TASK 52-41-23-010-801-A	Opening of Access Door 314AR
TASK 52-41-23-410-801-A	Closing of Access Door 314AR

3. Job Set-up
Subtask 26-22-42-941-051-A

A. Put a WARNING NOTICE(S) in position on panel 25VU to tell persons not to operate the APU.

Subtask 26-22-42-865-054-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/FIRE AND OVHT/DET/LOOP B	2WG	L44
121VU	APU/FIRE AND OVHT/DET/LOOP A	1WG	L43
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
121VU	APU/FIRE/EXTIG/SQUIB/B	2WF	L39
121VU	APU/FIRE/EXTIG/SQUIB/A	1WF	L38
121VU	APU/FIRE/LP VALVE/NORM	4WF	M42
121VU	APU/FIRE/LP VALVE/STBY	3WF	M41

Subtask 26-22-42-010-051-A

C. Get Access

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(1) Put on and attach a safety harness before you start work in the work area
(2) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below access door 314AR.
(3) Open access door 314AR and safety it in the open position.
(Ref. AMM TASK 52-41-23-010-801).
(4) If necessary, use a FLASHLIGHT.

4. Procedure
Subtask 26-22-42-920-050-A ** ON A/C NOT FOR ALL

A. Remove and Discard the APU Fire Extinguisher Bottle Cartridge (12WF).
(1) Remove the cartridge (Ref. AMM TASK 26-22-42-000-001).
(a) Make sure that the MS25043-10DA CARTRIDGE CAP is installed on the cartridge.
(b) Make sure that the cartridge is in an BAG - ELECTROSTATIC SAFETY.
(2) Install the new AIPC 26-22-04-01-055 CARTRIDGE (2) or AIPC 26-22-84-01-110 CARTRIDGE (2) (Ref. AMM TASK 26-22-42-400-001).
(3) Send the cartridge to the workshop for disposal.

Subtask 26-22-42-920-050-B ** ON A/C NOT FOR ALL

A. Remove and Discard the APU Fire Extinguisher Bottle Cartridge (12WF).
(1) Remove the cartridge (Ref. AMM TASK 26-22-42-000-001).
(a) Make sure that the 6971-0010 CAP SHUNT-FIRE BOTTLE is installed on the cartridge.
(b) Make sure that the cartridge is in an BAG - ELECTROSTATIC SAFETY.
(2) Install the new AIPC 26-22-04-01-055 CARTRIDGE (2) (Ref. AMM TASK 26-22-42-400-001).
(3) Send the cartridge to the workshop for disposal.

5. Close-up
Subtask 26-22-42-865-055-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/FIRE AND OVHT/DET/LOOP B	2WG	L44
121VU	APU/FIRE AND OVHT/DET/LOOP A	1WG	L43
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
121VU	APU/FIRE/EXTIG/SQUIB/B	2WF	L39
121VU	APU/FIRE/EXTIG/SQUIB/A	1WF	L38
121VU	APU/FIRE/LP VALVE/NORM	4WF	M42
121VU	APU/FIRE/LP VALVE/STBY	3WF	M41

Subtask 26-22-42-410-054-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 314AR (Ref. AMM TASK 52-41-23-410-801).
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 23:45:43 UTC