DOC AIRBUS | AMM A320FInstallation of the Low Earth Orbit (LEO) Antenna/Satellite Data Unit (SDU) Coaxial Cable
TASK 23-28-43-400-802-A
Installation of the Low Earth Orbit (LEO) Antenna/Satellite Data Unit (SDU) Coaxial Cable
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 23-28-43-860-054-A ** ON A/C NOT FOR ALL
Subtask 23-28-43-420-051-A ** ON A/C NOT FOR ALL
Subtask 23-28-43-410-051-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) Antenna/Satellite Data Unit (SDU) Coaxial Cable
FIN: 1044RV ** 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 | 1 | ACCESS PLATFORM 3M (10 FT) |
| No specific | AR | CAP - BLANKING |
| No specific | 1 | STEPLADDER 1.5 M (5 FT) |
| No specific | AR | TIE WRAP(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14QDB1) | Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy - |
| REFERENCE | DESIGNATION |
|---|---|
| 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 25-23-41-400-001-A | Installation of the Ceiling Panels |
| TASK 25-23-43-400-001-A | Installation of the Upper Sidewall Panel |
| TASK 25-23-44-400-001-A | Installation of the Lower Sidewall Panels (Dado Panels) |
| TASK 25-54-11-000-001-A | Removal of the Forward Cargo-Compartment Partition FR24A |
| TASK 25-54-11-400-001-A | Installation of the Forward Cargo-Compartment Partition FR24A |
| TASK 23-28-00-00-04 | SATELLITE COMMUNICATION - DESCRIPTION AND OPERATION |
Coaxial CableSubtask 23-28-43-860-054-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).
Subtask 23-28-43-865-055-A ** ON A/C NOT FOR ALL (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 23-28-43-010-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | SATCOM | 240RV | K01 |
C. Get Access
(1) In the cabin:
(a) For the location of this component, refer to Para. Component Location (Ref. AMM D/O 23-28-00-00).
(b) Make sure that the STEPLADDER 1.5 M (5 FT) is in position below the applicable ceiling panel.
(c) Make sure that the applicable ceiling panels are removed (Ref. AMM TASK 25-23-41-400-001).
(d) Make sure that the applicable upper sidewall-panel(s) is(are) removed (Ref. AMM TASK 25-23-43-400-001).
(e) Make sure that the applicable lower sidewall-panels are removed (Ref. AMM TASK 25-23-44-400-001).
(2) In the forward cargo compartment:
(a) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position at access door 825 in zone 130.
(b) Make sure that access door 825 is open.
(3) Make sure that sidewall panel 131CW is open (Ref. AMM TASK 25-54-11-000-001).
4. Procedure(1) In the cabin:
(a) For the location of this component, refer to Para. Component Location (Ref. AMM D/O 23-28-00-00).
(b) Make sure that the STEPLADDER 1.5 M (5 FT) is in position below the applicable ceiling panel.
(c) Make sure that the applicable ceiling panels are removed (Ref. AMM TASK 25-23-41-400-001).
(d) Make sure that the applicable upper sidewall-panel(s) is(are) removed (Ref. AMM TASK 25-23-43-400-001).
(e) Make sure that the applicable lower sidewall-panels are removed (Ref. AMM TASK 25-23-44-400-001).
(2) In the forward cargo compartment:
(a) Make sure that the ACCESS PLATFORM 3M (10 FT) is in position at access door 825 in zone 130.
(b) Make sure that access door 825 is open.
(3) Make sure that sidewall panel 131CW is open (Ref. AMM TASK 25-54-11-000-001).
Subtask 23-28-43-420-051-A ** ON A/C NOT FOR ALL
A. Installation of the Coaxial Cable
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) In the cabin:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that the coaxial connectors are clean and in the correct condition.
(c) Connect the coaxial connector (2) to the LEO passive antenna (4):
1 Turn the coaxial connector (2) approximately five times (quarter turns) to fully engage it into the coaxial receptacle of the LEO passive antenna (4).
2 If you feel a resistance in the first turn:
a This gives an indication that the threads of the coaxial connector (2) and the coaxial receptacle are not aligned correctly.
b Thus, do this step again until the threads of the coaxial connector (2) and the coaxial receptacle are aligned correctly.
14QDB1 Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy -
(e) Put the coaxial cable (1) in the bobbin (6) on the supports (7) and (9) and attach it with a new TIE WRAP(S) (5).
(4) In the cargo compartment:
(a) Put the coaxial cable (1) in the bobbin (6) on the supports (8) and (10) and attach it with a new TIE WRAP(S) (5).
(b) Put the coaxial cable (1) in the bobbin (6) against the cable (12) and attach it with a new TIE WRAP(S) (5).
(c) Put the coaxial cable (1) in the bobbin (6) on the supports (11) and (7) and attach it with a new TIE WRAP(S) (5).
(d) Remove the CAP - BLANKING from the coaxial receptacle of the LEO SDU.
(e) Make sure that the coaxial connector is clean and in the correct condition.
(f) Connect the coaxial connector to the LEO SDU:
1 Turn the coaxial connector approximately five times (quarter turns) to fully engage it into the coaxial receptacle of the LEO SDU.
2 If you feel a resistance in the first turn:
a This gives an indication that the threads of the coaxial connector and the coaxial receptacle are not aligned correctly.
b Thus, do this step again until the threads of the coaxial connector and the coaxial receptacle are aligned correctly.
Subtask 23-28-43-865-054-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) In the cabin:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that the coaxial connectors are clean and in the correct condition.
(c) Connect the coaxial connector (2) to the LEO passive antenna (4):
1 Turn the coaxial connector (2) approximately five times (quarter turns) to fully engage it into the coaxial receptacle of the LEO passive antenna (4).
2 If you feel a resistance in the first turn:
a This gives an indication that the threads of the coaxial connector (2) and the coaxial receptacle are not aligned correctly.
b Thus, do this step again until the threads of the coaxial connector (2) and the coaxial receptacle are aligned correctly.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(d) Safety the coaxial connector (2) with (e) Put the coaxial cable (1) in the bobbin (6) on the supports (7) and (9) and attach it with a new TIE WRAP(S) (5).
(4) In the cargo compartment:
(a) Put the coaxial cable (1) in the bobbin (6) on the supports (8) and (10) and attach it with a new TIE WRAP(S) (5).
(b) Put the coaxial cable (1) in the bobbin (6) against the cable (12) and attach it with a new TIE WRAP(S) (5).
(c) Put the coaxial cable (1) in the bobbin (6) on the supports (11) and (7) and attach it with a new TIE WRAP(S) (5).
(d) Remove the CAP - BLANKING from the coaxial receptacle of the LEO SDU.
(e) Make sure that the coaxial connector is clean and in the correct condition.
(f) Connect the coaxial connector to the LEO SDU:
1 Turn the coaxial connector approximately five times (quarter turns) to fully engage it into the coaxial receptacle of the LEO SDU.
2 If you feel a resistance in the first turn:
a This gives an indication that the threads of the coaxial connector and the coaxial receptacle are not aligned correctly.
b Thus, do this step again until the threads of the coaxial connector and the coaxial receptacle are aligned correctly.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 23-28-43-740-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | SATCOM | 240RV | K01 |
C. Test
(1) Do the BITE test of the Satellite Communication System (Ref. AMM TASK 23-28-00-740-001).
5. Close-up(1) Do the BITE test of the Satellite Communication System (Ref. AMM TASK 23-28-00-740-001).
Subtask 23-28-43-410-051-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) Install the applicable ceiling panels (Ref. AMM TASK 25-23-41-400-001).
(3) Install the applicable upper sidewall-panel(s) (Ref. AMM TASK 25-23-43-400-001).
(4) Install the applicable lower sidewall-panels (Ref. AMM TASK 25-23-44-400-001).
(5) Install sidewall panel 131CW (Ref. AMM TASK 25-54-11-400-001).
(6) Close access door 825.
(7) Remove the access platform(s).
Subtask 23-28-43-860-055-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable ceiling panels (Ref. AMM TASK 25-23-41-400-001).
(3) Install the applicable upper sidewall-panel(s) (Ref. AMM TASK 25-23-43-400-001).
(4) Install the applicable lower sidewall-panels (Ref. AMM TASK 25-23-44-400-001).
(5) Install sidewall panel 131CW (Ref. AMM TASK 25-54-11-400-001).
(6) Close access door 825.
(7) Remove the access platform(s).
B. Aircraft Maintenance Configuration
(1) Remove all the fixtures, tools, test and support equipment used during this procedure.
(2) Remove the WARNING NOTICE(S).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Remove all the fixtures, tools, test and support equipment used during this procedure.
(2) Remove the WARNING NOTICE(S).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).