DOC AIRBUS | AMM A320FInstallation of the Cockpit Voice Recorder (CVR)
TASK 23-71-35-400-001-A
Installation of the Cockpit Voice Recorder (CVR)
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 23-71-35-420-050-A ** ON A/C NOT FOR ALL
Subtask 23-71-35-410-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.03.31 23:16:13 UTC
Installation of the Cockpit Voice Recorder (CVR)
WARNING:
PUT WARNING NOTICES IN THE COCKPIT TO TELL PERSONS NOT TO OPERATE THE FLIGHT CONTROLS.
THE MOVEMENT OF THE TRIMMABLE HORIZONTAL STABILIZER (THS) CAN CAUSE INJURY TO PERSONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 312 | AFT FUSLG TAIL SECTION |
| 312AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-71-00-710-001-A | Operational Check of CVR and CVR-Channel Recording |
| TASK 23-71-00-710-002-A | Operational Test of the CVR Recording Logic Including Time Delay Relay |
| TASK 23-71-00-710-002-B | Operational Check of CVR Recording Logic Including Time Delay Relay |
| 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 31-39-33-400-801-A | Installation of the Cockpit Voice and Data Recorder (CVDR) and the Umbrella Panels |
NOTE: The procedure is valid for the Cockpit Voice Recorder (CVR) and Solid State Cockpit Voice Recorder (SSCVR).
Subtask 23-71-35-860-053-A ** ON A/C NOT FOR ALL A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at zone 312.
(3) Make sure that access door 312AR is open.
Subtask 23-71-35-860-053-B ** ON A/C NOT FOR ALL (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at zone 312.
(3) Make sure that access door 312AR is open.
A. Aircraft Maintenance Configuration
(1) No special job set-up is necessary for this task.
Subtask 23-71-35-865-051-A (1) No special job set-up is necessary for this task.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CVR/SPLY | 2RK | E14 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CVR/SPLY | 23RK | E14 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | RCDR1 CVR&FDR | 40TU | E14 |
Subtask 23-71-35-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Cockpit Voice Recorder (CVR)
Solid State Cockpit Voice Recorder (SSCVR) ** ON A/C NOT FOR ALL
Solid State Cockpit Voice Recorder (SSCVR) ** ON A/C NOT FOR ALL
(1) Make sure that the Underwater Locator Beacon (ULB) is correctly installed.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Remove the CAP - BLANKING from the electrical connectors (3).
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Carefully install the CVR (1) into the rack (2).
(7) Make sure that the CVR is correctly aligned to prevent damage to the electrical connection.
(8) Lift the fasteners and tighten the knurled nuts (4) until the CVR (1) is correctly attached.
Subtask 23-71-35-420-050-B ** ON A/C NOT FOR ALL Subtask 23-71-35-865-054-A Solid State Cockpit Voice Recorder (SSCVR) ** ON A/C NOT FOR ALL Solid State Cockpit Voice Recorder (SSCVR) ** ON A/C NOT FOR ALL (2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Remove the CAP - BLANKING from the electrical connectors (3).
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Carefully install the CVR (1) into the rack (2).
(7) Make sure that the CVR is correctly aligned to prevent damage to the electrical connection.
(8) Lift the fasteners and tighten the knurled nuts (4) until the CVR (1) is correctly attached.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 23-71-35-710-050-A ** ON A/C NOT FOR ALL Subtask 23-71-35-710-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CVR/SPLY | 2RK | E14 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CVR/SPLY | 23RK | E14 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | RCDR1 CVR&FDR | 40TU | E14 |
D. Do the operational test of the CVR recording logic including time delay relay (Ref. AMM TASK 23-71-00-710-002).
5. Close-upSubtask 23-71-35-410-051-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 312AR.
(3) Remove the access platform(s).
Subtask 23-71-35-862-050-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 312AR.
(3) Remove the access platform(s).