Cleaning of EWIS Installed in the Air Conditioning Compartment and Fairings (Only If Contaminated)(EWIS)

TASK 24-92-00-100-027-A
Cleaning of EWIS Installed in the Air Conditioning Compartment and Fairings (Only If Contaminated)(EWIS)

ZONE: 191
ZONE: 192

1. Reason for the Job
Refer to the MPD TASK: 200191-01
CLEANING OF EWIS INSTALLED IN THE AIR CONDITIONING COMPARTMENT AND FAIRINGS (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 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191	AIR CONDITIONING COMPT AND FAIRINGS
192	AIR CONDITIONING COMPT AND FAIRINGS
191AB, 191AT, 191BT, 191CT, 191DT, 191EB, 191ET, 191GB, 191HB, 191JB, 191KB, 191LB, 192AB, 192AT, 192BT, 192CT, 192DT, 192EB, 192ET, 192FB, 192KB, 192LB, 192MB

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 52-42-18-000-001-A	Removal of the Fuel Panel Access-Door
TASK 52-42-18-400-001-A	Installation of the Fuel Panel Access-Door
TASK 53-25-11-000-001-A	Removal of the Forward Belly Fairing Panels (191AT, 192AT, 191AB, 192AB)
TASK 53-25-11-400-001-A	Installation of Forward Belly Fairing Panels (191AT, 191AB, 192AT, 192AB)
TASK 53-35-11-000-001-A	Removal of the Wing-to-Fuselage Fairings
TASK 53-35-11-400-001-A	Installation of the Wing-to-Fuselage Fairings
TASK 53-35-13-000-001-A	Removal of the Belly Fairing Access Panels
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-001-A	Installation of the Belly Fairing Access Panels
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure
ESPM 2055000
Air Conditioning Compartment and Fairings - Access Panels on the Left Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Access Panels on the Right Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Cleaning Area - Zones 191-192 ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Access Panels on the Left Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Access Panels on the Right Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Cleaning Area - Zones 191-192 ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Access Panels on the Left Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Access Panels on the Right Side ** ON A/C NOT FOR ALL
Air Conditioning Compartment and Fairings - Cleaning Area - Zones 191-192 ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 24-92-00-010-145-A

A. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(2) Remove the access panels:

Subtask 24-92-00-862-133-A

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

4. Procedure
Subtask 24-92-00-160-075-A

A. Cleaning of All Wiring Installed in the Air Conditioning Compartment and Fairings (Only Contaminated Wiring)
(1) Clean the wiring if there is dust or lint contamination ESPM 2055000.
(a) On the AC/DC power-distribution routes: 1P and 2P.
(b) On the other routes: 1M and 2M.
(c) On the overheat detection.

5. Close-up
Subtask 24-92-00-410-143-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panels:
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:27:25 UTC