Cleaning of EWIS Installed in the Forward Passenger Compartment (Only If Contaminated)(EWIS)

TASK 24-92-00-100-002-A
Cleaning of EWIS Installed in the Forward Passenger Compartment (Only If Contaminated)(EWIS)

ZONE: 231
ZONE: 232

1. Reason for the Job
Refer to the MPD TASK: 200231-01
CLEANING OF EWIS INSTALLED IN THE FORWARD PASSENGER COMPARTMENT (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
231	FWD PASSENGER COMPARTMENT
232	FWD PASSENGER COMPARTMENT
231AW, 231BW, 231CW, 231DW, 231EW, 231FW, 231GW, 231HW, 231JW, 231KW, 231LW, 231MW, 231NW, 231PW, 231QW, 231RW, 231SW, 231TW, 232AW, 232BW, 232CW, 232DW, 232EW, 232FW, 232GW, 232HW, 232JW, 232KW, 232LW, 232MW, 232NW, 232PW, 232QW, 232RW, 232SW, 232TW
231UW, 231VW, 231WW, 231XW, 231YW, 231ZW, 232UW, 232VW, 232WW, 232XW, 232YW, 232ZW

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 25-23-45-000-002-A	Removal of the Door Frame Linings from the Right Forward Passenger/Crew Door
TASK 25-23-45-000-005-A	Removal of the Door Frame Linings from the Left Forward Passenger/Crew Door
TASK 25-23-45-400-006-A	Installation of the Door Frame Linings on the Left Forward Passenger/Crew Door
TASK 25-23-45-400-007-A	Installation of the Door Frame Linings on the Right Forward Passenger/Crew Door
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 25-27-44-000-002-A	Removal of the Forward Stowage
TASK 25-27-44-000-003-A	Removal of the Stowage FWD RH
TASK 25-27-44-400-002-A	Installation of the Forward Stowage
TASK 25-27-44-400-003-A	Installation of the Stowage FWD RH
TASK 25-31-41-000-001-A	Removal of the Forward Galley Unit
TASK 25-31-41-400-001-A	Installation of the Forward Galley Unit
TASK 25-41-41-000-001-A	Removal of Lavatory A
TASK 25-41-41-400-001-A	Installation of Lavatory A
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
Forward Passenger Compartment - Access Panels - Zones 231-232 ** ON A/C NOT FOR ALL
Forward Passenger Compartment - Cleaning Area - Zones 231-232
Forward Passenger Compartment - Access Panels - Zones 231-232 ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 24-92-00-010-088-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at the zone 831 (841).
(2) Open the forward passenger/crew door 831 (841) (Ref. AMM TASK 52-10-00-010-001).
(3) Remove the furnishings in the zones 231 and 232:
(a) Remove the lavatories, if installed (Ref. AMM TASK 25-41-41-000-001) and (Ref. AMM D/O 25-41-42-00).
(b) Remove the stowage, if installed (Ref. AMM TASK 25-27-44-000-002) and (Ref. AMM TASK 25-27-44-000-003).
(c) Remove the galleys, if installed (Ref. AMM TASK 25-31-41-000-002).
(d) Remove the passenger seats, if installed (Ref. AMM TASK 25-21-41-000-001).
(4) Remove the door frame linings at the left and right FWD passenger/crew doors at FR20 (Ref. AMM TASK 25-23-45-000-005) and (Ref. AMM TASK 25-23-45-000-002).
(5) Remove the linings in the zones 231 and 232:
(a) Remove the upper sidewall panels (Ref. AMM TASK 25-23-43-000-001):

231BW 231EW 231HW 231LW 231PW 231SW 231VW 231YW, 232BW 232EW 232HW 232LW 232PW 232SW 232VW 232YW.

(b) Remove the lower sidewall panels (Ref. AMM TASK 25-23-44-000-001):

231AW 231DW 231GW 231KW 231NW 231RW 231UW 231XW, 232AW 232DW 232GW 232KW 232NW 232RW 232UW 232XW.

231BW 231EW 231HW 231LW 231PW 231SW 232BW 232EW 232HW 232LW 232PW 232SW.

Subtask 24-92-00-010-088-B ** ON A/C NOT FOR ALL

231BW 231EW 231HW 231LW 231PW 231SW, 232BW 232EW 232HW 232LW 232PW 232SW.

(b) Remove the lower sidewall panels (Ref. AMM TASK 25-23-44-000-001):

231AW 231DW 231GW 231KW 231NW 231RW, 232AW 232DW 232GW 232KW 232NW 232RW.

231CW 231FW 231JW 231MW 231QW 231TW 232CW 232FW 232JW 232MW 232QW 232TW.

Subtask 24-92-00-862-076-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 24-92-00-160-051-A ** ON A/C NOT FOR ALL

A. Cleaning of All Wiring Installed in the Forward Passenger Compartment (Only Contaminated Wiring)
(1) Clean wiring if there is dust or lint contamination ESPM 2055000.
(a) On the flight control wiring: routes 7S, 8S and 7M.
(b) On the engine control wiring: routes 1S and 2S.
(c) On the generator excitation wiring: routes 3E and 6E.
(d) On other wiring: routes 1M and 2M.
(e) On the coaxial wiring: routes 1T, 3T, 7T, 8T, 9T and 1U.

5. Close-up
Subtask 24-92-00-410-086-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 linings in the zones 231 and 232:
(a) Install the upper sidewall panels (Ref. AMM TASK 25-23-43-400-001):

231BW 231EW 231HW 231LW 231PW 231SW 231VW 231YW, 232BW 232EW 232HW 232LW 232PW 232SW 232VW 232YW.

(b) Install the lower sidewall panels (Ref. AMM TASK 25-23-44-400-001):

231AW 231DW 231GW 231KW 231NW 231RW 231UW 231XW, 232AW 232DW 232GW 232KW 232NW 232RW 232UW 232XW.

231CW 231FW 231JW 231MW 231QW 231TW 231WW 231ZW, 232CW 232FW 232JW 232MW 232QW 232TW 232WW 232ZW.

(3) Install the door frame linings at the left and right FWD passenger/crew doors at FR20 (Ref. AMM TASK 25-23-45-400-006) and (Ref. AMM TASK 25-23-45-400-007).
(4) Install the furnishings in the zones 231 and 232:
(a) Install the lavatories, if removed (Ref. AMM TASK 25-41-41-400-001) and (Ref. AMM D/O 25-41-42-40).
(b) Install the stowage, if removed (Ref. AMM TASK 25-27-44-400-002) and (Ref. AMM TASK 25-27-44-400-003).
(c) Install the galleys, if removed (Ref. AMM TASK 25-31-41-400-002).
(d) Install the passenger seats, if removed (Ref. AMM TASK 25-21-41-400-001).
(5) Close the forward passenger/crew door 831 (841) (Ref. AMM TASK 52-10-00-410-001).
(6) Remove the access platform(s).

Subtask 24-92-00-410-086-B ** ON A/C NOT FOR ALL

231BW 231EW 231HW 231LW 231PW 231SW, 232BW 232EW 232HW 232LW 232PW 232SW.

(b) Install the lower sidewall panels (Ref. AMM TASK 25-23-44-400-001):

231AW 231DW 231GW 231KW 231NW 231RW, 232AW 232DW 232GW 232KW 232NW 232RW.

231CW 231FW 231JW 231MW 231QW 231TW, 232CW 232FW 232JW 232MW 232QW 232TW.

[Rev.10 from 2021] 2026.03.31 23:27:01 UTC