GENERAL VISUAL INSPECTION OF AVIONICS COMPARTMENT (EWIS)

TASK 05-21-20-200-001-A
GENERAL VISUAL INSPECTION OF AVIONICS COMPARTMENT (EWIS)

ZONE: 121
ZONE: 122

1. Reason for the Job
Refer to the MPD TASK: ZL-121-01

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 3M (10 FT)- ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
122	AVIONICS COMPARTMENT
811

3. Job Set-up
Subtask 05-21-20-010-050-A

A. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zones 121 and 122.
(2) Open the avionic-compartment access door 811.

4. Procedure
Subtask 05-21-20-210-050-A

A. Inspection
(1) Do a general visual inspection of the forward avionic compartment (Zones 121 and 122).
(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 05-21-20-410-050-A

A. Close Access
(1) Close the avionic-compartment access door 811.
(2) Remove the access platform(s).

[Rev.8 from Aug 2017] 2026.03.31 22:48:35 UTC