Cleaning of EWIS Installed in the Aft Cabin Utility-Area (Only If Contaminated) (EWIS)

TASK 24-92-00-100-022-A
Cleaning of EWIS Installed in the Aft Cabin Utility-Area (Only If Contaminated) (EWIS)

ZONE: 261
ZONE: 262

1. Reason for the Job
Refer to the MPD TASK: 200261-01
CLEANING OF EWIS INSTALLED IN THE AFT CABIN UTILITY AREA (ONLY IF CONTAMINATED) (EWIS)

NOTE: This is an EWIS (Electrical Wiring Interconnection System) procedure. EWIS is defined in ESPM 20-33-11.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
261	AFT CABIN UTILITY AREA
262	AFT CABIN UTILITY AREA
251AX, 251BX, 251CX, 251RX, 251SX, 251TX, 252AX, 252BX, 252CX, 252RX, 252SX, 252TX

C. Referenced Information

REFERENCE	DESIGNATION
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 25-21-41-000-001-A	Removal of the Passenger Seats
TASK 25-21-41-400-001-A	Installation of the Passenger Seats
TASK 25-23-43-000-001-A	Removal of the Upper Sidewall Panel
TASK 25-23-43-400-001-A	Installation of the Upper Sidewall Panel
TASK 25-23-44-000-001-A	Removal of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-44-400-001-A	Installation of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
TASK 25-33-41-000-002-A	Removal of the Aft Galley Unit
TASK 25-33-41-400-002-A	Installation of the Aft Galley Unit
TASK 25-33-42-000-001-A	Removal of the Aft Galley Unit
TASK 25-33-42-400-001-A	Installation of the Aft Galley Unit
TASK 25-33-45-000-001-A	Removal of the Aft Galley Unit
TASK 25-33-45-400-001-A	Installation of the Aft Galley Unit
TASK 25-33-50-000-802-A	Removal of Galley G4B (Space-Flex V2)
TASK 25-33-50-400-801-A	Installation of the Aft Galley Unit
TASK 25-33-50-400-802-A	Installation of Galley G4B (Space-Flex V2)
TASK 25-43-41-000-001-A	Removal of Lavatory D
TASK 25-43-41-000-802-A	Removal of the Lavatory Ds
TASK 25-43-41-400-001-A	Installation of Lavatory D
TASK 25-43-41-400-802-A	Installation of the Lavatory Ds
TASK 25-43-42-000-001-A	Removal of Lavatory E
TASK 25-43-42-000-802-A	Removal of Lavatory Es
TASK 25-43-42-400-001-A	Installation of Lavatory E
TASK 25-43-42-400-802-A	Installation of Lavatory Es
TASK 25-43-49-000-802-A	Removal of Space-Flex Lavatory B/F or F/G or D/E
TASK 25-43-49-400-802-A	Installation of Space-Flex Lavatory B/F or F/G or D/E
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-10-00-410-001-A	Closing of the Passenger/Crew Door
ESPM 2055000
Aft Cabin Utility-Area - Cleaning Area - Zones 261-262
Aft Cabin Utility-Area - Access Panels - Zones 261-262 ** ON A/C NOT FOR ALL
Aft Cabin Utility-Area - Access Panels - Zones 261-262 ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 24-92-00-010-126-A

A. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below passenger/crew door 832(842).
(2) Open passenger/crew door 832(842) (Ref. AMM TASK 52-10-00-010-001).
(3) Remove the furnishings in zones 261 and 262:
(a) If the lavatories are installed, remove them (Ref. AMM TASK 25-43-41-000-001), (Ref. AMM TASK 25-43-41-000-802), (Ref. AMM D/O 25-43-41-00), (Ref. AMM TASK 25-43-42-000-001), (Ref. AMM TASK 25-43-42-000-802), (Ref. AMM D/O 25-43-42-00), (Ref. AMM D/O 25-43-43-00), (Ref. AMM D/O 25-43-48-00), (Ref. AMM D/O 25-43-49-00), (Ref. AMM TASK 25-43-49-000-802) and (Ref. AMM D/O 25-43-49-00).
(b) If the galleys and the stowage are installed, remove them (Ref. AMM D/O 25-33-41-00), (Ref. AMM TASK 25-33-41-000-002), (Ref. AMM D/O 25-33-41-00), (Ref. AMM TASK 25-33-42-000-001), (Ref. AMM D/O 25-33-43-00), (Ref. AMM D/O 25-33-43-00), (Ref. AMM TASK 25-33-45-000-001), (Ref. AMM D/O 25-33-46-00), (Ref. AMM D/O 25-33-49-00), (Ref. AMM D/O 25-33-50-00), (Ref. AMM TASK 25-33-50-000-802) and (Ref. AMM D/O 25-33-52-00).
(c) If the passengers seats are installed, remove them (Ref. AMM TASK 25-21-41-000-001).
(4) Remove the linings in zones 261 and 262:
(a) If upper sidewall panels 251BX, 251SX, 252BX and/or 252SX are installed, remove them (Ref. AMM TASK 25-23-43-000-001).
(b) If lower sidewall panels 251AX, 251RX, 252AX and/or 252RX are installed, remove them (Ref. AMM TASK 25-23-44-000-001).
(c) If cove light panels 251CX, 251TX, 252CX and/or 252TX are installed, remove them (Ref. AMM TASK 25-23-48-000-001).

Subtask 24-92-00-010-126-B

DELETED

Subtask 24-92-00-862-114-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

4. Procedure
Subtask 24-92-00-160-070-A

A. Cleaning of All Wiring Installed in the Aft Cabin Utility-Area (Only Contaminated Wiring)
(1) Clean the wiring if there is dust or lint contamination ESPM 2055000.
(a) On the AC/DC power-distribution route: 2P.
(b) On other routes: 1M, 2M and 8M.
(c) On the audio and video route: 1R.
(d) On the coaxial wiring routes: 9T and 10T.

5. Close-up
Subtask 24-92-00-410-124-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the linings and the insulation panels at zones 261 and 262:
(a) If upper sidewall panels 251BX, 251SX, 252BX and/or 252SX are removed, install them (Ref. AMM TASK 25-23-43-400-001).
(b) If lower sidewall panels 251AX, 251RX, 252AX and/or 252RX are removed, install them (Ref. AMM TASK 25-23-44-400-001).
(c) If cove light panels 251CX, 251TX, 252CX and/or 252TX are removed, install them (Ref. AMM TASK 25-23-48-400-001).
(3) Install the furnishings at zones 261 and 262:
(a) If the lavatories are removed, install them (Ref. AMM TASK 25-43-41-400-001), (Ref. AMM TASK 25-43-41-400-802), (Ref. AMM D/O 25-43-41-40), (Ref. AMM TASK 25-43-42-400-001), (Ref. AMM TASK 25-43-42-400-802), (Ref. AMM D/O 25-43-42-40), (Ref. AMM D/O 25-43-43-40), (Ref. AMM D/O 25-43-48-40), (Ref. AMM D/O 25-43-49-40), (Ref. AMM TASK 25-43-49-400-802) and (Ref. AMM D/O 25-43-49-40).
(b) If the galleys and the stowage are removed, install them (Ref. AMM D/O 25-33-41-40), (Ref. AMM TASK 25-33-41-400-002), (Ref. AMM D/O 25-33-41-40), (Ref. AMM TASK 25-33-42-400-001), (Ref. AMM D/O 25-33-43-40), (Ref. AMM D/O 25-33-43-40), (Ref. AMM TASK 25-33-45-400-001), (Ref. AMM D/O 25-33-46-40), (Ref. AMM D/O 25-33-49-40), (Ref. AMM TASK 25-33-50-400-801), (Ref. AMM TASK 25-33-50-400-802) and (Ref. AMM D/O 25-33-52-40).
(c) If the passenger seats are removed, install them (Ref. AMM TASK 25-21-41-400-001).
(4) Close passenger/crew door 832(842) (Ref. AMM TASK 52-10-00-410-001).
(5) Remove the access platform(s).

Subtask 24-92-00-410-124-B

DELETED

[Rev.10 from 2021] 2026.03.31 23:27:20 UTC