Operational Test of the Yaw Damper Function

TASK 22-63-00-710-001-A
Operational Test of the Yaw Damper Function

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

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.

ZONE: 210

1. Reason for the Job
Make sure that the Yaw Damper System N°1 (N°2) operates correctly.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. 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 31-32-00-860-010-A	Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 34-14-00-740-001-A	Interface Test of the IR

3. Job Set-up
Subtask 22-63-00-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (ECAM system only) (Ref. AMM TASK 31-60-00-860-001).
(3) Pressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-10-00-863-003).
(4) On the center pedestal, on the ECAM control panel:

Get the F/CTL page.

(5) On the overhead panel, on the ADIRS CDU:

Set the OFF/NAV/ATT selector switch related to IR3 to NAV.
Make sure that the OFF/NAV/ATT selector switches related to IR1 and IR2 are in the OFF position.

(6) On the overhead panel, on the FLT CTL panels 23VU and 24VU:

Make sure that the FAC1 and the FAC2 pushbutton switches are pushed (the FAULT and OFF legends are off).

Subtask 22-63-00-860-050-B ** ON A/C NOT FOR ALL

Get the F/CTL page.

(5) On the overhead panel, on the ADIRS MSU:

Set the OFF/NAV/ATT selector switch related to IR3 to NAV
Make sure that the OFF/NAV/ATT selector switches related to IR1 and IR2 are in the OFF position.

(6) On the overhead panel, on the FLT CTL panels 23VU and 24VU:

Make sure that the FAC1 and the FAC2 pushbutton switches are pushed (the FAULT and OFF legends are off).

Subtask 22-63-00-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** ON A/C ALL
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18

4. Procedure
Subtask 22-63-00-710-050-A ** ON A/C NOT FOR ALL

A. Operational Test of the Yaw Damper Function

NOTE: This test is for the system 1. For the system 2, use the indications between the parentheses.

ACTION	RESULT
1.On the FLT CTL panel 24VU(23VU):
Release the FAC2(FAC1) pushbutton switch.	On this pushbutton switch, the OFF legend comes on.
2.On the center pedestal, on one MCDU: Get the SYSTEM REPORT/TEST NAV page (Ref. AMM TASK 31-32-00-860-010).
Push the line key adjacent to the IR3 indication.	The IR3 page comes into view.
Get access to the INTERFACE TEST of the IR3 (Ref. AMM TASK 34-14-00-740-001).
NOTE: For the test below, ignore the warnings and the attitude changes.
3.Push the line key adjacent to the START TEST indication.	The rudder moves to the left, then moves back to zero.
4.Push the line key adjacent to the RETURN (TEST STOP) indication.	The rudder moves to the right, then moves back to zero.
5.On the MCDU: Push the line key adjacent to the RETURN indication until the CFDS menu page comes into view.	On the MCDU: The CFDS MENU page comes into view.
6.On the FLT CTL panel 24VU(23VU):
Push the FAC2(FAC1) pushbutton switch.	On this pushbutton switch, the OFF legend goes off.

Subtask 22-63-00-710-050-C ** ON A/C NOT FOR ALL

A. Operational Test of the Yaw Damper Function

NOTE: This test is for the system 1. For the system 2, use the indications between the parentheses.

ACTION	RESULT
1.On the FLT CTL panel 24VU(23VU):
Release the FAC2(FAC1) pushbutton switch.	On this pushbutton switch, the OFF legend comes on.
2.On the center pedestal, on one MCDU: Get the SYSTEM REPORT/TEST NAV page (Ref. AMM TASK 31-32-00-860-010).
Push the line key adjacent to the IR3 indication.	The IR3 page comes into view.
Get access to the INTERFACE TEST of the IR3 (Ref. AMM TASK 34-14-00-740-001).
NOTE: For the test below, ignore the warnings and the attitude changes.
3.Push the line key adjacent to the START TEST indication.	The rudder moves to the left, then moves back to zero.
4.Push the line key adjacent to the RETURN indication.	The rudder moves to the right, then moves back to zero.
5.On the MCDU: Push the line key adjacent to the RETURN indication until the CFDS menu page comes into view.	On the MCDU: The CFDS MENU page comes into view.
6.On the FLT CTL panel 24VU(23VU):
Push the FAC2(FAC1) pushbutton switch.	On this pushbutton switch, the OFF legend goes off.

5. Close-up
Subtask 22-63-00-860-051-A ** ON A/C NOT FOR ALL

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 29-10-00-864-003).
(2) On the overhead panel, on the ADIRS CDU, set the OFF/NAV/ATT selector switch related to IR3 to OFF.
(3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 22-63-00-860-051-B ** ON A/C NOT FOR ALL

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 29-10-00-864-003).
(2) On the overhead panel, on the ADIRS MSU, set the OFF/NAV/ATT selector switch related to IR3 to OFF.
(3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 04:13:04 UTC