Operational Check of the Damping Measurement by BITE (Elevator)

TASK 27-96-00-710-008-A
Operational Check of the Damping Measurement by BITE (Elevator)

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.

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 273400-01
OPERATIONAL CHECK OF DAMPING MEASUREMENT BY BITE
To make sure that the damping coefficient of the elevator servocontrols is sufficient. If the test result is satisfactory, the L/R ELEV TEST OK indication comes into view on the MCDU.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

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

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
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 27-96-00-710-001-A	Operational Test of the FCDC
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 31-32-00-860-006-A	Procedure to Get Access to the SYSTEM REPORT/TEST F/CTL Page
TSM 27-30-00-810-848	(for corrective action)
TSM 27-30-00-810-852	(for corrective action)
TSM 29-12-00-810-804	(for corrective action)
TSM 29-24-00-810-801	(for corrective action)

3. Job Set-up
Subtask 27-96-00-860-089-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) On the overhead panel 23VU, make sure that:

the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches are pushed (on these pushbutton switches, the FAULT and OFF legends are off).

(3) On the overhead panel 24VU, make sure that:

the FLT CTL/ELAC 2, FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches are pushed (on these pushbutton switches, the FAULT and OFF legends are off).

(4) On the overhead panel 20VU, on the ADIRS CDU:

make sure that the 3 OFF/NAV/ATT selector switches are in the OFF position.

(5) On the center pedestal, make sure that the SPEED BRAKE control lever is set to RET.
(6) On the MCDU:

Get access to the SYSTEM REPORT/TEST F/CTL page (Ref. AMM TASK 31-32-00-860-006).

Subtask 27-96-00-860-089-B ** 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) On the overhead panel 23VU, make sure that:

the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches are pushed (on these pushbutton switches, the FAULT and OFF legends are off).

(3) On the overhead panel 24VU, make sure that:

the FLT CTL/ELAC 2, FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches are pushed (on these pushbutton switches, the FAULT and OFF legends are off).

(4) On the overhead panel 41VU, on the ADIRS MSU:

make sure that the 3 OFF/NAV/ATT selector switches are in the OFF position.

(5) On the center pedestal, make sure that the SPEED BRAKE control lever is set to RET.
(6) On the MCDU:

Get access to the SYSTEM REPORT/TEST F/CTL page (Ref. AMM TASK 31-32-00-860-006).

Subtask 27-96-00-010-057-A

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(2) Open the access door 822.
(3) On the battery power center 105VU:

loosen the two screws and remove the protective cover.

Subtask 27-96-00-865-061-A

C. 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/FCDC1/SPLY	20CE1	B10
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/FCDC1/SPLY	20CE1	B05
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
** ON A/C NOT FOR ALL
121VU	PTR/SPLY	6TW	J21
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	CFDS/CFDIU/BACK/UP	8TW	J17
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	FLIGHT CONTROLS/FCDC2/SPLY	20CE2	Q20
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20
** ON A/C NOT FOR ALL
121VU	PTR/SPLY	6TW	J44
121VU	CFDS/CFDIU/SPLY	2TW	J41
121VU	CFDS/CFDIU/BACK/UP	8TW	J40

4. Procedure
Subtask 27-96-00-710-059-A

A. Operational check of the elevator damping measurement by BITE

CAUTION: DO NOT OPERATE THE SIDE STICKS.

(1) Do the operational test of the FCDC1 and FCDC2 (Ref. AMM TASK 27-96-00-710-001).

(2) Pressurize the hydraulic systems:
(a) If you use the electric pumps to pressurize the three hydraulic systems, it is possible that the pressure in the systems will not be sufficient.

If the pressure is not sufficient, do these troubleshooting procedures TSM 29-24-00-810-801 and TSM 29-12-00-810-804.
If the fault continues, we recommand that you use a ground power cart to do this test.

NOTE: It is necessary to do this check only on one side, EFCS1 or EFCS2, not on the two sides. This will prevent possible incorrect test results.

ACTION	RESULT
1.Push the line key adjacent to the EFCS1 or the EFCS2 indication.	The MCDU shows the EFCS1 or the EFCS2 page.
2.Push the line key adjacent to the TEST indication.	The MCDU shows the EFCS1or the EFCS2/TEST page.
3.Push the line key adjacent to the ELEVATOR DAMPING TEST indication.	The MCDU shows the EFCS1 or the EFCS2/ELEVATOR DAMPING TEST page.
4.On the overhead panels 23VU and 24VU: Release the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches.	On the overhead panels 23VU and 24VU: The OFF legends of the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches come on.
5.Pressurize the Green, Blue and Yellow hydraulic systems with the electric pumps (Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-10-00-863-003) and (Ref. AMM TASK 29-24-00-863-001).
6.On the center pedestal, on the MCDU, push the line key adjacent to the START LEFT ELEV TEST indication.	On the EFCS1 or the EFCS2/ELEVATOR DAMPING TEST page, the MCDU shows: The L ELEV TEST OK indication The minimum value The damping factors. If the ELEV TEST NOT POSSIBLE message is shown, do the troubleshooting procedure TSM 27-30-00-810-848. If the elevator damping test result is not ok, do the troubleshooting procedure TSM 27-30-00-810-852.
7.Push the line key adjacent to the RETURN indication.
8.Push the line key adjacent to the START RIGHT ELEV TEST indication .	On the EFCS1 or the EFCS2/ELEVATOR DAMPING TEST page, the MCDU shows: The R ELEV TEST OK indication The minimum value The damping factors. If the ELEV TEST NOT POSSIBLE message is shown, do the troubleshooting procedure TSM 27-30-00-810-848. If the elevator damping test result is not ok, do the troubleshooting procedure TSM 27-30-00-810-852.
9.On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
10.On the overhead panels 23VU and 24VU: Push the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches.	On the overhead panels 23VU and 24VU : The OFF legends of the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches go off. The FAULT legends of the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches come on then go off after not many seconds.

5. Close-up
Subtask 27-96-00-860-069-A

A. Put the aircraft back to its initial configuration.
(1) Depressurize the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-10-00-864-003) (Ref. AMM TASK 29-24-00-864-001) .
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 27-96-00-410-059-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) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:59:58 UTC