Installation of Trimmable Horizontal Stabilizer (THS) Tips 332AB/342AB

TASK 55-14-11-400-001-A
Installation of Trimmable Horizontal Stabilizer (THS) Tips 332AB/342AB

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: DO NOT CAUSE DAMAGE TO THE SURFACES. THE COMPONENTS ARE MADE OF CARBONFIBER REINFORCED PLASTIC.

ZONE: 332
ZONE: 342

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SCRAPER - NON METALLIC
98D27903500000	2	PIN-SIDE STICK LOCKING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06AAC1)	Polysulfide Sealant-General Purpose Interfay -
(Material No.08BBC1)	Non Aqueous Cleaner-- Naphta based and Alcohol -
(Material No.14DBB1)	Release Agent-- Liquid Wax -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
332	THS TIP
342	THS TIP

D. Referenced Information

REFERENCE	DESIGNATION
TASK 23-61-41-400-001-A	Installation of the Static Discharger
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
THS Tip

3. Job Set-up
Subtask 55-14-11-860-051-A

A. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002), (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the 98D27903500000 PIN-SIDE STICK LOCKING is in the CAPT and F/O side stick controllers.
(3) Make sure that the warning notices are in the flight compartment to tell persons not to operate the flight controls.
(4) Make sure that the warning notices are in position to tell persons not to operate the hydraulic systems.
(5) Make sure that the access platforms are in position at zone 332 and/or zone 342.

Subtask 55-14-11-865-054-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16

4. Procedure
Subtask 55-14-11-110-051-A

A. Prepare the Tips for Installation
(1) Use a SCRAPER - NON METALLIC to remove the old sealant from the mating surfaces of the tip, the rib and the upper and the lower shell.
(2) Use Non Aqueous Cleaner-- Naphta based and Alcohol - (Material No.08BBC1) and clean Textile-Lint free Cotton - (Material No.14SBA1) to clean the component and the interface
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.

Subtask 55-14-11-420-052-A

B. Installation of the THS Tips 332AB (342AB)

NOTE: The installation of the left tip 332AB is shown. The installation of the right tip 342AB is the same.

(1) Apply Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) to the mating surfaces of the tip, the rib and the upper and lower shell.
(2) Apply Release Agent-- Liquid Wax - (Material No.14DBB1) to the mating surfaces of the tip.
(3) Put the tip (2) in position on the THS.
(4) Install the screws (1) and tighten.

Subtask 55-14-11-914-051-A

C. Sealing
(1) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the gap around the tip.

Subtask 55-14-11-420-051-A

D. Install the Static Discharger
(1) Install the static discharger (Ref. AMM TASK 23-61-41-400-001).

5. Close-up
Subtask 55-14-11-410-050-A

A. Visual Inspection
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 55-14-11-942-050-A

B. Remove Ground Equipment
(1) Remove the access platform(s).
(2) Remove the WARNING NOTICE(S).

Subtask 55-14-11-081-050-A

C. Remove Locking Devices
(1) Remove the 98D27903500000 PIN-SIDE STICK LOCKING from the CAPT and F/O side stick controllers.

Subtask 55-14-11-865-051-A

D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16

[Rev.10 from 2021] 2026.04.01 02:04:56 UTC