Deactivation of the Spoiler Elevator Computer (SEC)

TASK 27-94-00-040-002-A
Deactivation of the Spoiler Elevator Computer (SEC)

ZONE: 120
ZONE: 210
FIN: 1CE1
FIN: 1CE2

1. Reason for the Job
MMEL 27-94-01A
SEC 1
MMEL 27-94-02A
SEC 2
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	AR	WARNING NOTICE(S)
FOR [1CE1] (SEC-1)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
FOR [1CE2] (SEC-2)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
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)

3. Job Set-up
Subtask 27-94-00-860-054-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the overhead panel, on the FLT CTL panel 23VU:

Make sure that the FLT CTL/ELAC1 pushbutton switch is pushed. (On this pushbutton switch the OFF legend is off).

(3) On the overhead panel, on the FLT CTL panel 24VU

Make sure that the FLT CTL/ELAC2 pushbutton switch is pushed. (On this pushbutton switch the OFF legend is off).

Subtask 27-94-00-010-053-A

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

Loosen the two screws and remove the protective cover.

Subtask 27-94-00-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU3/PWR/SWTG	8FP	F09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	NAV PROBES/ADIRU 1/AND AOA 1/26VAC	5FP1	F07
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU3/PWR/SWTG	8FP	F08
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** 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
105VU	ADIRS/ADIRU1/28VDC	6FP1	C02
105VU	ELEC/HOT BUS/702PP SPLY	5PB2	D02
105VU	ELEC/HOT BUS/701PP SPLY	5PB1	D01
105VU	ELEC/HOT BUS/702PP SPLY	12PB2	E02
105VU	ELEC/HOT BUS/701PP SPLY	12PB1	E01
** ON A/C NOT FOR ALL
121VU	ADIRS/ADIRU/2PWR/SHED	10FP	N10
** ON A/C ALL
121VU	COM NAV/RAD ALTM/2	1SA2	K12
121VU	COM NAV/RAD ALTM/1	1SA1	K11
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18
121VU	ADIRS/ADIRU/3PWR/SWTG	9FP	N09
121VU	ADIRS/ADIRU/2/26VAC AND AOA	5FP2	N08
121VU	ADIRS/ADIRU/3/26VAC AND AOA	5FP3	N07
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	ADIRS/ADIRU/2/28VDC	6FP2	N04
121VU	ADIRS/ADIRU/3/28VDC	6FP3	N03
121VU	FLIGHT CONTROLS/WTB/FLP/SYS2	12CV	P20
121VU	FLIGHT CONTROLS/WTB/SLT/SYS2	11CV	P19
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20
** ON A/C NOT FOR ALL
121VU	ADIRS/2PWR/SHED &/AOA2 MON	10FP	N10
** ON A/C ALL
122VU	FLIGHT CONTROLS/WTB/FLP/SYS1	10CV	S07
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

4. Procedure
Subtask 27-94-00-040-050-B

A. Deactivation of the Spoiler Elevator Computer (SEC1) or (SEC2)

NOTE: The spoilers related to the SEC deactivated will not operate.

(1) FOR [1CE1] (SEC-1)
Open, safety and tag this(these) circuit breaker(s):
21CE1 and 22CE.

(2) FOR [1CE2] (SEC-2)
Open, safety and tag this(these) circuit breaker(s):
21CE2.

(3) Do this test before each flight:

ACTION	RESULT
1.On the center pedestal, on one MCDU, push the MCDU MENU mode key.	The MCDU shows the MCDU MENU page.
2.Push the line key adjacent to the CFDS indication.	The MCDU shows the CFDS MENU page.
3.Push the line key adjacent to the SYSTEM REPORT/TEST indication.	The MCDU shows the SYSTEM REPORT/TEST page.
4.Push the line key adjacent to the F/CTL indication.	The MCDU shows the F/CTL page.
5.Push the line key adjacent to the EFCS1(2) indication.	The MCDU shows the EFCS1(2) page.
6.Push the line key adjacent to the GROUND SCAN indication.	The MCDU shows the EFCS1(2) GROUND SCAN page.
7.Push the line key adjacent to the START GROUND SCAN indication and wait for two minutes.
8.Push the line key adjacent to the GROUND SCAN STOP indication.
9.Push the line key adjacent to the GROUND REPORT indication.	Make sure that none of the CFDS fault messages that follow are there: CFDS fault messages related to sidestick: ELAC1(2) OR INPUT OF CAPT ROLL CTL SSTU 4CE1, ELAC1(2) OR INPUT OF F/O ROLL CTL SSTU 4CE2, ELAC1(2) OR INPUT OF CAPT PITCH CTL SSTU 4CE3, ELAC1(2) OR INPUT OF F/O PITCH CTL SSTU 4CE4, SEC1(2)(3) (the non defective SECs) OR INPUT OF CAPT ROLL CTL SSTU 4CE1, SEC1(2)(3) (the non defective SECs) OR INPUT OF F/O ROLL CTL SSTU 4CE2, SEC1(2) (the non defective SECs) OR INPUT OF CAPT PITCH CTL SSTU 4CE3, SEC1(2) (the non defective SECs) OR INPUT OF F/O PITCH CTL SSTU 4CE4, CAPT ROLL CTL SSTU 4CE1, F/O ROLL CTL SSTU 4CE2, CAPT PITCH CTL SSTU 4CE3 and F/O PITCH CTL SSTU 4CE4.
	CFDS fault messages related to pitch control from the opposite SEC, if SEC1 not in operation: CHECK PITCH CHANGE OVER OF SEC2, SEC2 OR WIRING FROM L G ELEV POS XCDR 34CE1, SEC2 OR WIRING FROM R Y ELEV POS XCDR 34CE2, SEC2 OR WIRING FROM L ELEV POS MON XCDR, SEC2 OR WIRING FROM R ELEV POS MON XCDR, SEC2 COM OR WIRING TO L G ELEV SERVO VLV 34CE1, SEC2 COM OR WIRING TO R Y ELEV SERVO VLV 34CE2, SEC2 MON OR WIRING TO L G ELEV SERVO VLV 34CE1, SEC2 MON OR WIRING TO R Y ELEV SERVO VLV 34CE2, SEC2 OR WIRING FROM L B ELEV MODE XCDR 34CE3, SEC2 OR WIRING FROM R B ELEV MODE XCDR 34CE4, SEC2 MON OR WIRING TO L B ELEV SOL VLV 34CE3 and SEC2 MON OR WIRING TO R B ELEV SOL VLV 34CE4.
	CFDS fault messages related to pitch control from the opposite SEC, if SEC2 not in operation: CHECK PITCH CHANGE OVER OF SEC1, SEC1 OR WIRING FROM L B ELEV POS XCDR 34CE3, SEC1 OR WIRING FROM R B ELEV POS XCDR 34CE4, SEC1 OR WIRING FROM L ELEV POS MON XCDR, SEC1 OR WIRING FROM R ELEV POS MON XCDR, SEC1 COM OR WIRING TO L B ELEV SERVO VLV 34CE3, SEC1 COM OR WIRING TO R B ELEV SERVO VLV 34CE4, SEC1 MON OR WIRING TO L B ELEV SERVO VLV 34CE3, SEC1 MON OR WIRING TO R B ELEV SERVO VLV 34CE4, SEC1 OR WIRING FROM L G ELEV MODE XCDR 34CE1, SEC1 OR WIRING FROM R Y ELEV MODE XCDR 34CE2, SEC1 MON OR WIRING TO L G ELEV SOL VLV 34CE1 and SEC1 MON OR WIRING TO R Y ELEV SOL VLV 34CE2.
10.On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.	The MCDU shows the MCDU MENU page.

5. Close-up
Subtask 27-94-00-410-053-A

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

Subtask 27-94-00-860-057-A

B. Aircraft Maintenance Configuration
(1) On the overhead panel, on the FLT CTL panel 23VU or 24VU, put a WARNING NOTICE(S) on the pushbutton switch related to the SEC that you deactivated.
(2) Make an entry in the log book.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:59:35 UTC