BITE Test of the Slat and Flap Control Computers (Flap System)

TASK 27-51-00-740-002-A
BITE Test of the Slat and Flap Control Computers (Flap System)

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.

NOTE: IGNORE ALL THE ECAM WARNINGS WHEN THE COMPUTER IS IN THE MENU MODE.

ZONE: 127
ZONE: 128
FIN: 21CV
FIN: 22CV

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	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT

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 31-32-00-860-006-A	Procedure to Get Access to the SYSTEM REPORT/TEST F/CTL Page

3. Job Set-up
Subtask 27-51-00-941-071-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put a WARNING NOTICE(S) in position to tell persons not to operate the flight controls.

Subtask 27-51-00-860-057-A

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Get access to the SYSTEM REPORT/TEST F/CTL page on the Multipurpose Control Display Unit (MCDU) (Ref. AMM TASK 31-32-00-860-006).

Subtask 27-51-00-865-062-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/FLP/CTL AND MONG/SYS1	6CV	B07
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/FLP/SYS2	12CV	P20
121VU	FLIGHT CONTROLS/WTB/SLT/SYS2	11CV	P19
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
122VU	FLIGHT CONTROLS/WTB/FLP/SYS1	10CV	S07
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

4. Procedure
Subtask 27-51-00-740-050-A

A. BITE Test of the Slat and Flap Control Computer (Flap System)

NOTE: Use the Multipurpose Control Display Unit (MCDU) 2 on panel 11VU for the test.

ACTION	RESULT
1.On the Multipurpose Control Display unit (MCDU): push the line key < SFCC 1.	On the MCDU: the MCDU shows the SFCC 1 menu.
2.On the MCDU: push the NEXT PAGE button.	On the MCDU: the MCDU shows the next page of the SFCC 1 menu.
3.On the MCDU: push the line key TEST/RESET FLP>.	On the MCDU: the MCDU shows the SFCC 1 FLAP TEST/RESET menu.
4.On the MCDU: push the line key < SFCC TEST.	the MCDU shows SFCC 1 FLAP SFCC TEST IN PROGRESS for a positive test result the MCDU shows SFCC 1 FLAP SFCC TEST NO FAULTS for a negative test result, the MCDU shows SFCC 1 FLAP SFCC TEST PERFORMED WITH FAULT <FAULT DATA (push the line key <FAULT DATA to show the the failure data) if the test finds a peripheral fault, the MCDU shows SFCC 1 FLAP SFCC TEST NO FAULTS BUT (for a peripheral fault see the display below).
5.On the MCDU: push the line key < RETURN frequently until the MCDU shows the SYSTEM REPORT/TEST F/CTL menu.
6.On the MCDU: push the line key < SFCC 2.	On the MCDU: the MCDU shows the SFCC 2 menu.
7.Do the SFCC test as described above with the SFCC 2 menu.
8.On the MCDU: push the line key < RETURN frequently until the CFDS menu page is shown.

-------------------------------------------------------------------------------

! If there is a peripheral fault, the SFCC TEST RESULT !

! page will be shown on the CFDS. !

!-----------------------------------------------------------------------------!

! SFCC 1 !

! FLAP SFCC TEST !

! DATE:XXX XX UTC:XXXX !

! 1L -!NO FAULTS BUT !- 1R !

! ! ! !

! 2L -!* !- 2R !

! ! ! !

! 3L -!** !- 3R !

! ! ! !

! 4L -! !- 4R !

! ! ! !

! 5L -! !- 5R !

! ! ! !

! 6L -!<RETURN PRINT>!- 6R !

! !

-------------------------------------------------------------------------------

NOTE: "*" If the X-computer arm test is not done during the TEST these words will be shown:

-------------------------------------------------------------------------------

! !

! 2L -!OTHER SFCC ARM SIGNAL!- 2R !

! !NOT TESTED ! !

! !

-------------------------------------------------------------------------------

NOTE: "**" Shows one or more of the peripheral faults or a system is not complete as follows:

-------------------------------------------------------------------------------

! !

! either !WTB SET ! !

! ! ! !

! and/or !NO WTB POWER ! !

! ! ! !

! and/or !LH WTB SOLENOID X/X ! !

! ! ! !

! and/or !RH WTB SOLENOID X/X ! !

! ! ! !

! and/or !FPPU FAULT ! !

! ! ! !

! and/or !LH APPU FAULT ! !

! ! ! !

! and/or !RH APPU FAULT ! !

! !

-------------------------------------------------------------------------------

NOTE: "X/X" shows S/C short circuit or O/C open circuit.

5. Close-up
Subtask 27-51-00-862-051-A

A. Aircraft Configuration
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 27-51-00-942-075-A

B. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 06:56:30 UTC