Cleaning of EWIS Installed in the Cockpit (Only If Contaminated) (EWIS)

TASK 24-92-00-100-016-A
Cleaning of EWIS Installed in the Cockpit (Only If Contaminated) (EWIS)

ZONE: 211
ZONE: 212

1. Reason for the Job
Refer to the MPD TASK: 200211-01
CLEANING OF EWIS INSTALLED IN THE COCKPIT (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
211	COCKPIT
212	COCKPIT
211BC, 211FC, 211HC, 212BC, 212FC, 212KW, 831, 841

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 25-13-41-000-001-A	Removal of the Ceiling Panels
TASK 25-13-41-000-002-A	Removal of the Sidewall Panels
TASK 25-13-41-400-001-A	Installation of the Ceiling Panels
TASK 25-13-41-400-002-A	Installation of the Sidewall Panels
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
Cockpit - Sidewall Panels and Ceiling Panels - Zones 211-212
Cockpit - Cleaning Area - Zones 211-212

3. Job Set-up
Subtask 24-92-00-010-117-A

A. Get Access

Cockpit - Sidewall Panels and Ceiling Panels - Zones 211-212

(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position.
(2) Open forward passenger/crew door 831( 841) (Ref. AMM TASK 52-10-00-010-001).
(3) Remove cockpit ceiling panels 211BC, 211FC, 211HC, 212BC and 212FC (Ref. AMM TASK 25-13-41-000-001).
(4) Remove cockpit sidewall panel 212KW (Ref. AMM TASK 25-13-41-000-002).

Subtask 24-92-00-862-105-A

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

4. Procedure
Subtask 24-92-00-160-065-A

A. Cleaning of All Wiring Installed in the Cockpit (Only Contaminated Wiring)
(1) Clean the wiring if there is dust or lint contamination ESPM 2055000.
(a) On the AC/DC feeder routes: 1G, 3G and 4G.
(b) On the AC/DC power-distribution routes: 1P, 2P and 6P.
(c) On the flight control wiring.
(d) On the engine control routes: 1S and 2S.
(e) On the other routes: 1M and 2M.
(f) On the audio route: 1R.
(g) On the generator excitation routes: 1E, 2E and 3E.

5. Close-up
Subtask 24-92-00-410-115-A

A. Close Access

Cockpit - Sidewall Panels and Ceiling Panels - Zones 211-212

(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install cockpit sidewall panel 212KW (Ref. AMM TASK 25-13-41-400-002).
(3) Install cockpit ceiling panels 211BC, 211FC, 211HC, 212BC and 212FC (Ref. AMM TASK 25-13-41-400-001).
(4) Close forward passenger/crew door 831( 841) (Ref. AMM TASK 52-10-00-410-001).
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:27:14 UTC