Installation of the ELAC

TASK 27-93-34-400-001-A
Installation of the ELAC

ZONE: 127
ZONE: 128
FIN: 2CE1
FIN: 2CE2

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
822, 824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 22-97-00-710-001-A	Operational Test of the LAND CAT III Capability
TASK 27-93-00-610-001-A	Uploading of the Elevator Aileron Computer (ELAC) Software
TASK 27-93-00-710-001-A	Operational Test of the Elevator and Aileron Computers (ELACs)
TASK 27-93-34-000-001-A	Removal of the ELAC
TASK 27-93-34-400-001-A	Installation of the ELAC
TASK 31-32-00-860-006-A	Procedure to Get Access to the SYSTEM REPORT/TEST F/CTL Page
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
Elevator Aileron Computer (ELAC)

3. Job Set-up
Subtask 27-93-34-010-051-A

A. Get Access
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE are in position at the access door 822 and at the access door 824.
(2) Make sure that the access doors 822 and 824 are open.
(3) On the battery power center 105VU:

Make sure that the protective cover is open.

Subtask 27-93-34-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 2CE1 (ELAC1)
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
** ON A/C ALL
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
FOR FIN: 2CE2 (ELAC2)
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

4. Procedure
Subtask 27-93-34-420-050-A

A. Installation of the ELAC
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking caps from the electrical connectors (2).
(4) Install the ELAC (1) on its rack (3).
(5) Push the ELAC (1) on its rack (3) to connect the electrical connectors (2).
(6) Engage the nuts (4) on the lugs and tighten them.

Subtask 27-93-34-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 2CE1 (ELAC1)
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
** ON A/C ALL
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
FOR FIN: 2CE2 (ELAC2)
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 27-93-34-280-052-A ** ON A/C NOT FOR ALL

C. Do the LRU IDENTIFICATION of the ELAC.

NOTE: This procedure is for the ELAC1. For the ELAC2, use the indications between the parentheses.

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

ACTION	RESULT
1.Push the line key adjacent to the EFCS 1(2) indication.	The EFCS 1(2) menu page comes into view.
2.Push the line key adjacent to the LRU IDENTIFICATION indication.	The LRU IDENTIFICATION page comes into view. For dataloadable ELAC P/N 3945129100, the P/N given on this page is the operational software P/N. For non-dataloadable ELAC P/N 3945128xxx, the P/N given is the full and only ELAC P/N.

(2) Make sure that the P/N of the ELAC shown on the LRU IDENTIFICATION page agrees with the Airline Configuration Management Document.
(a) If the P/N is different from the PN(s) given in the Airline Configuration Management Document, replace the ELAC (Ref. AMM TASK 27-93-34-000-001) and (Ref. AMM TASK 27-93-34-400-001).

NOTE: For ELAC P/N 3945129100, Airbus recommends to put (or update) an informative label on the front face of the computer with the P/N of the loaded software. This label is for information only. The procedure to identify the operational software P/N stays the LRU IDENTIFICATION on the MCDU.

Subtask 27-93-34-280-052-B ** ON A/C NOT FOR ALL

C. Do the LRU IDENTIFICATION of the ELAC.

NOTE: This procedure is for the ELAC1. For the ELAC2, use the indications between the parentheses.

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

ACTION	RESULT
1.Push the line key adjacent to the EFCS 1(2) indication.	The EFCS 1(2) menu page comes into view.
2.Push the line key adjacent to the LRU IDENTIFICATION indication.	The LRU IDENTIFICATION page comes into view. For dataloadable ELAC P/N 3945129100, the P/N given on this page is the operational software P/N. For non-dataloadable ELAC P/N 3945128xxx, the P/N given is the full and only ELAC P/N.

If the ELAC LRU IDENTIFICATION shows the P/N 3945122XXX or 3945123XXX or 3945128XXX(non-dataloadable units), replace the ELAC (Ref. AMM TASK 27-93-34-000-001) and (Ref. AMM TASK 27-93-34-400-001).

If the ELAC LRU IDENTIFICATION shows the P/N 3945129XXX, do the uploading of the ELAC software (Ref. AMM TASK 27-93-00-610-001).

Subtask 27-93-34-710-050-A

CAUTION: MAKE SURE THAT THE SOFTWARE INSTALLED AGREES WITH THE AIRLINE CONFIGURATION MANAGEMENT DOCUMENT. THE SYSTEM OPERATIONAL TEST OR BITE TEST DOES NOT DETECT INCORRECT SOFTWARE CONFIGURATION.

D. Do the operational test of the ELAC (Ref. AMM TASK 27-93-00-710-001).

NOTE: If the airline operates the aircraft in CAT III conditions, do the LAND CAT III capability test (Ref. AMM TASK 22-97-00-710-001).

5. Close-up
Subtask 27-93-34-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the protective cover on the battery power center 105VU.
(3) Tighten the two screws.
(4) Close the access doors 822 and 824 (Ref. AMM TASK 52-41-00-410-002).
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 04:38:31 UTC