Check of the Zero Adjustment of the THS

TASK 27-41-00-220-003-A
Check of the Zero Adjustment of the THS

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 FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

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: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.

ZONE: 210
ZONE: 310

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD
312AR, 822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 27-41-00-010-059-A

A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(a) Open the access door 822.
(b) On the battery power center 105VU:

loosen the two screws and remove the protective cover.

(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the access door 312AR.
(a) Open the access door 312AR.
(3) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position in the zone 310.

Subtask 27-41-00-865-052-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

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
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
105VU	FLT CTL/SEC1/STBY SPLY	22CE	B01
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
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 27-41-00-860-062-A

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002)
(2) Pressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-24-00-863-001) (Ref. AMM TASK 29-10-00-863-003).
(3) On the panel 23VU, release the FLT CTL/SEC 1 and FLT CTL/ELAC 1 pushbutton switches (on these pushbutton switches, the OFF legends come on).
(4) On the panel 24VU, release the FLT CTL/ELAC 2 and the FLT CTL/SEC 2 pushbutton switches (on these pushbutton switches, the OFF legends come on).
(5) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(6) On the center pedestal, on the ECAM control panel, push the F/CTL pushbutton switch (on the lower ECAM display unit, the F/CTL page comes into view).

4. Procedure
Subtask 27-41-00-866-054-A

A. Check of the Zero Adjustment of the THS
(1) On the center pedestal, move the THS from the zero position to x degrees Nose up with the pitch-trim control-wheel.
(2) On the panel 23VU, push the FLT CTL/SEC 1 pushbutton switch (on this pushbutton switch, the OFF legend goes off).
(3) Make sure that the pitch-trim control-wheels move to zero (0 mark on the pitch-trim control-wheels, opposite the triangle on the center pedestal).
(4) On the F/CTL page of the lower ECAM display unit:

the PITCH TRIM indicator shows 0° plus or minus 0.3°.

(5) On the tail cone, make sure that the THS is opposite the 0 mark.
(6) On the panel 23VU, release the FLT CTL/SEC 1 pushbutton switch (on this pushbutton switch, the OFF legend comes on).
(7) On the center pedestal, move the THS from the zero position with the pitch-trim control-wheel.
(8) On the panel 24VU, push the FLT CTL/ELAC 2 pushbutton switch (on the pushbutton switch, the OFF legend goes off).
(9) Make sure that the pitch-trim control-wheels move to zero (the 0 mark on the pitch-trim control-wheels is opposite the triangle on the center pedestal).
(10) On the F/CTL page of the lower ECAM display unit:

make sure that the PITCH TRIM indicator shows 0° plus or minus 0.3°.

(11) On the tail cone, make sure that the THS is opposite the 0 mark.
(12) On the panel 24VU, release the FLT CTL/ELAC 2 pushbutton switch (on this pushbutton switch, the OFF legend comes on).
(13) On the center pedestal, move the THS from the zero position to x degrees Nose up with the pitch-trim control-wheel.
(14) On the panel 24VU, push the FLT CTL/SEC 2 pushbutton switch (on this pushbutton switch, the OFF legend goes off).
(15) Make sure that the pitch-trim control-wheels move to zero (0 mark on the pitch-trim control-wheels opposite the triangle on the center pedestal).
(16) On the F/CTL page of the lower ECAM display unit:

make sure that the PITCH TRIM indicator shows 0° plus or minus 0.3°.

(17) On the tail cone, make sure that the THS is opposite the 0 mark.

5. Close-up
Subtask 27-41-00-860-063-A

A. Put the aircraft back to its initial configuration.
(1) Depressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(2) On the panel 23VU, push the FLT CTL/SEC 1 and FLT CTL/ELAC 1 pushbutton switches (on these pushbutton switches, the OFF legends go off).

(3) On the panel 24VU, push the FLT CTL/ELAC 2 pushbutton switch (on this pushbutton switch, the OFF legend goes off).
(4) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(5) Make sure that the work area is clean and clear of tools and other items.
(6) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 27-41-00-410-055-A

B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Tighten the two screws.
(3) Close the access door 822.
(4) Close the access door 312AR.
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:50:52 UTC