GENERAL VISUAL INSPECTION OF CENTER WING BOX (EWIS)

TASK 05-21-40-200-001-A
GENERAL VISUAL INSPECTION OF CENTER WING BOX (EWIS)

ZONE: 141
ZONE: 142

1. Reason for the Job
Refer to the MPD TASK: ZL-141-01
GENERAL VISUAL INSPECTION OF CENTER WING BOX (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	AR	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
141	WING CENTER BOX
142	WING CENTER BOX
147AZ, 148AZ

C. Referenced Information

REFERENCE	DESIGNATION
TASK 57-17-11-000-001-A	Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-B	Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-A	Installation of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-B	Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door

3. Job Set-up
Subtask 05-21-40-010-050-A

A. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position at the zones 141 and 142.
(2) Remove the cover panels:
147AZ 148AZ, (Ref. AMM TASK 57-17-11-000-001).

4. Procedure
Subtask 05-21-40-210-050-A

A. Inspection
(1) Do a general visual inspection of the wing center box (Zones 141 and 142).
(2) Make sure that there are no signs of corrosion, cracks or damage.
(3) Make sure that all the installations (wiring, ducting, piping) are attached correctly.

5. Close-up
Subtask 05-21-40-410-050-A

A. Close Access
(1) Install the cover panels:
147AZ 148AZ, (Ref. AMM TASK 57-17-11-400-001).
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 22:48:44 UTC