GENERAL VISUAL INSPECTION OF TRIMMABLE HORIZONTAL STABILIZER LEADING EDGE (EWIS)

TASK 05-23-30-200-001-A
GENERAL VISUAL INSPECTION OF TRIMMABLE HORIZONTAL STABILIZER LEADING EDGE (EWIS)

ZONE: 331
ZONE: 341

1. Reason for the Job
Refer to the MPD TASK: ZL-331-01
GENERAL VISUAL INSPECTION OF TRIMMABLE HORIZONTAL STABILIZER LEADING EDGE (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 3M (10 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
331	THS LEADING EDGE
341	THS LEADING EDGE
331AB, 331BB, 331CB, 341AB, 341BB, 341CB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 55-12-11-000-001-A	Removal of the Trimmable Horizontal Stabilizer (THS) Leading Edge
TASK 55-12-11-400-001-A	Installation of the Trimmable Horizontal Stabilizer (THS) Leading Edge

3. Job Set-up
Subtask 05-23-30-010-050-A

A. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT) in position.
(2) Remove the leading edges:
331AB 331BB 331CB (Ref. AMM TASK 55-12-11-000-001)
(3) Remove the leading edges:
341AB 341BB 341CB (Ref. AMM TASK 55-12-11-000-001)

4. Procedure
Subtask 05-23-30-210-050-A

A. Inspection
(1) Do a general visual inspection of the leading edge of the trimmable horizontal stabilizer.
(2) Make sure that there are no signs of corrosion, cracks or damage.
(3) Make sure that all the installations (ducting, piping) are attached correctly.

5. Close-up
Subtask 05-23-30-410-050-A

A. Close Access
(1) Install the leading edges:
331AB 331BB 331CB. (Ref. AMM TASK 55-12-11-400-001)
(2) Install the leading edges:
341AB 341BB 341CB. (Ref. AMM TASK 55-12-11-400-001)
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 22:49:40 UTC