General Visual Inspection of Vertical Stabilizer Spar Box (EWIS)

TASK 05-23-20-200-003-A
General Visual Inspection of Vertical Stabilizer Spar Box (EWIS)

ZONE: 323

1. Reason for the Job
Refer to the MPD TASK: ZL-323-01
GENERAL VISUAL INSPECTION OF VERTICAL STABILIZER SPAR 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	1	ACCESS PLATFORM 6M (20 FT)
No specific	1	FLASHLIGHT
No specific	1	MIRROR - INSPECTION, FLEXIBLE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RAB9)	Adhesive Film Tape-- Aluminium Foil -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
323	VERTICAL STABILIZER SPAR BOX
321AL, 322BL, 323AL, 323AR, 325AL, 325AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 53-45-11-000-001-A	Removal of the Dorsal Fin
TASK 53-45-11-400-001-A	Installation of the Dorsal Fin
TASK 53-55-11-000-001-A	Removal of the Vertical Stabilizer Fairings
TASK 53-55-11-400-001-A	Installation of the Vertical Stabilizer Fairings
TASK 53-55-12-000-001-A	Removal of the Rudder Fairings
TASK 53-55-12-400-001-A	Installation of the Rudder Fairings
TASK 55-32-11-000-001-A	Removal of the Vertical Stabilizer Leading-Edge
TASK 55-32-11-400-001-A	Installation of the Vertical Stabilizer Leading-Edge
Vertical-Stabilizer Spar-Box Area

3. Job Set-up
Subtask 05-23-20-010-052-A

A. Get Access
(1) Put the ACCESS PLATFORM 6M (20 FT) in position at zone 320.
(2) Remove the access panels:

(3) Remove the peelable hole covers.

4. Procedure
Subtask 05-23-20-210-052-A

A. Inspection

Vertical-Stabilizer Spar-Box Area

(1) Do a general visual inspection of the spar box of the vertical stabilizer (zone 323) with a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE.
(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 05-23-20-410-052-A

A. Close Access
(1) Cut and install the Adhesive Film Tape-- Aluminium Foil - (Material No.05RAB9) over the hole covers.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the access panels:

(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 22:49:34 UTC