DOC AIRBUS | AMM A320FInstallation of the Low Earth Orbit (LEO) Satellite Data Unit (SDU)
TASK 23-28-34-400-802-A
Installation of the Low Earth Orbit (LEO) Satellite Data Unit (SDU)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 23-28-34-860-055-A ** ON A/C NOT FOR ALL
Subtask 23-28-34-420-053-A ** ON A/C NOT FOR ALL
Subtask 23-28-34-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:12:03 UTC
Installation of the Low Earth Orbit (LEO) Satellite Data Unit (SDU)
FIN: 1005RV1 ** ON A/C NOT FOR ALL
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 824 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-28-00-600-802-A | Uploading of the SATCOM Software with a Laptop with Web Browser |
| TASK 23-28-00-740-001-A | BITE Test of the SATCOM system |
| 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 46-21-00-710-005-A | SATCOM Link Test of the ATSU |
LEO SDUSubtask 23-28-34-860-055-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) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below access door 824.
(3) Make sure that access door 824 is open.
Subtask 23-28-34-865-071-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below access door 824.
(3) Make sure that access door 824 is open.
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 | |||
| 121VU | SATCOM | 240RV | K01 |
Subtask 23-28-34-420-053-A ** ON A/C NOT FOR ALL
A. Installation of the LEO SDU
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Install the SDU (1) on its rack (3).
(6) Push the SDU (1) on its rack (3) and connect the electrical connectors (2).
(7) Engage the nut (4) on the lug (5) and tighten it.
Subtask 23-28-34-865-072-A ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Install the SDU (1) on its rack (3).
(6) Push the SDU (1) on its rack (3) and connect the electrical connectors (2).
(7) Engage the nut (4) on the lug (5) and tighten it.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 23-28-34-610-052-A ** ON A/C NOT FOR ALL Subtask 23-28-34-740-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | SATCOM | 240RV | K01 |
D. BITE Test of the SATCOM Status with the Multipurpose Control & Display Unit (MCDU)
(1) Do the BITE test of the SATCOM system (Ref. AMM TASK 23-28-00-740-001).
Subtask 23-28-34-440-050-A ** ON A/C NOT FOR ALL (1) Do the BITE test of the SATCOM system (Ref. AMM TASK 23-28-00-740-001).
E. Activation of the Data Modulator-Demodulator (Modem) International Mobile-Equipment Identifier, if necessary.
(1) On the MCDU, get access to the "SATCOM CONFIG" page.
(2) Do a check of the data-Modem international mobile-equipment identifier.
(3) To operate the data-Modem international mobile-equipment identifier of the SDU, speak to the service provider.
Subtask 23-28-34-740-054-A ** ON A/C NOT FOR ALL (1) On the MCDU, get access to the "SATCOM CONFIG" page.
| ACTION | RESULT |
|---|---|
1.On the MCDU main menu:
| On the MCDU:
|
|
|
|
|
(3) To operate the data-Modem international mobile-equipment identifier of the SDU, speak to the service provider.
NOTE: When the customer's service provider records the data-Modem international mobile-equipment-identifier of the SDU, it authenticates it on the iridium network and can then send Aircraft Communication Addressing and Reporting System (ACARS) messages.
F. SATCOM Link Test of the Air Traffic Service Unit (ATSU)
(1) If the SATCOM is correctly installed and the service provider operated it, do the SATCOM link test of the ATSU (Ref. AMM TASK 46-21-00-710-005).
5. Close-up(1) If the SATCOM is correctly installed and the service provider operated it, do the SATCOM link test of the ATSU (Ref. AMM TASK 46-21-00-710-005).
Subtask 23-28-34-410-053-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 824.
(3) Remove the access platform(s).
Subtask 23-28-34-862-050-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 824.
(3) Remove the access platform(s).