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

TASK 05-23-30-200-007-A
GENERAL VISUAL INSPECTION OF TRIMMABLE HORIZONTAL STABILIZER TRAILING EDGE (EWIS)

ZONE: 334
ZONE: 344

1. Reason for the Job
Refer to the MPD TASK: ZL-334-02
GENERAL VISUAL INSPECTION OF TRIMMABLE HORIZONTAL STABILIZER TRAILING 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 4M (13 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
334	THS TRAILING EDGE
344	THS TRAILING EDGE
334AB, 334AT, 334BB, 334BT, 334CB, 334CT, 334DB, 334DT, 334EB, 334FB, 334GB, 334HB, 344AB, 344AT, 344BB, 344BT, 344CB, 344CT, 344DB, 344DT, 344EB, 344FB, 344GB, 344HB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 55-13-11-000-001-A	Remove/Open of the Trimmable Horizontal Stabilizer (THS) Trailing-Edge Access-Panels
TASK 55-13-11-400-001-A	Install/Close of the Trimmable Horizontal Stabilizer (THS) Trailing-Edge Access-Panels

3. Job Set-up
Subtask 05-23-30-010-056-A

A. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT) in position.
(2) Remove the trailing edge access panels
334AT 334BT 334CT,
334DT 334AB 334BB,
334CB 334DB 334EB,
334FB 334GB 334HB,
344AT 344BT 344CT,
344DT 344AB 344BB,
344CB 344DB 344EB,
344FB 344GB 344HB,
(Ref. AMM TASK 55-13-11-000-001)

4. Procedure
Subtask 05-23-30-210-056-A

A. Inspection
(1) Do a general visual inspection of the trailing 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 (wiring, ducting, piping) are attached correctly.

5. Close-up
Subtask 05-23-30-410-056-A

A. Close Access
(1) Install the trailing edge access panels:
334AT 334BT 334CT,
334DT 334AB 334BB,
334CB 334DB 334EB,
334FB 334GB 334HB.
344AT 344BT 344CT,
344DT 344AB 344BB,
344CB 344DB 344EB,
344FB 344GB 344HB,
(Ref. AMM TASK 55-13-11-400-001)
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 22:49:46 UTC