Detailed Inspection of Horizontal Stabilizer, Internal Structure of Torque Box, Inboard of Fuselage Fairings

TASK 55-10-00-210-001-A
Detailed Inspection of Horizontal Stabilizer, Internal Structure of Torque Box, Inboard of Fuselage Fairings

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: 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: 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.

ZONE: 333
ZONE: 343

1. Reason for the Job
Refer to the MPD TASK: 551012-01
DETAILED INSPECTION OF HORIZONTAL STABILIZER, INTERNAL STRUCTURE OF TORQUE BOX, INBOARD OF FUSELAGE FAIRINGS
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27903500000	2	PIN-SIDE STICK LOCKING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RAB9)	Adhesive Film Tape-- Aluminium Foil -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
333	THS SPAR BOX
343	THS SPAR BOX
312AR, 314AR

D. Referenced Information

REFERENCE	DESIGNATION
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
TASK 52-41-23-010-801-A	Opening of Access Door 314AR
TASK 52-41-23-410-801-A	Closing of Access Door 314AR
SRM 551100
THS Sparbox Internal Structure Inboard Fuselage Fairings

3. Job Set-up
Subtask 55-10-00-860-050-A

A. Depressurize Hydraulic Systems
(1) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).

Subtask 55-10-00-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 55-10-00-481-050-A

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

Subtask 55-10-00-941-050-A

D. Safety Precautions
(1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 3M (10 FT) in position at zone 313 for the left hand sparbox and/or zone 314 for the right hand sparbox.

Subtask 55-10-00-010-050-A

E. Access
(1) Open the access doors 312AR and 314AR (Ref. AMM TASK 52-41-23-010-801).
(2) Remove the peelable hole covers from the lightening holes.

4. Procedure
Subtask 55-10-00-210-050-A

A. Detailed Inspection
(1) Make a detailed inspection of the horizontal stabilizer internal structure of the torque box inboard fuselage fairings, thru the lightening holes, for:

deterioration of the structure,
stringer debonding and delamination,
rib shear ties debonding,
spar flanges debonding.

(2) If damage is found, look for allowable damage limits SRM 551100.

5. Close-up
Subtask 55-10-00-410-052-A

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

Subtask 55-10-00-410-050-A

B. Close Access
(1) Installation of the peelable hole covers.
(a) For each lightening hole, cut a piece of Adhesive Film Tape-- Aluminium Foil - (Material No.05RAB9) with 20 mm (0.7874 in.) of excess of the hole dimension to make the peelable hole covers.
(b) Clean the adjacent area of the lightening holes with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) until contamination is removed. Do not let cleaning agent dry on the surfaces.
(c) Install the peelable hole covers on the lightening holes.
(2) Close the access doors 312AR and 314AR (Ref. AMM TASK 52-41-23-410-801).

Subtask 55-10-00-942-050-A

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

Subtask 55-10-00-081-050-A

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

Subtask 55-10-00-865-051-A

E. 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/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

[Rev.10 from 2021] 2026.04.01 03:59:47 UTC