DOC AIRBUS | AMM A320FInstallation of the Speedbrake Control Transducer-Unit
TASK 27-92-14-400-001-A
Installation of the Speedbrake Control Transducer-Unit
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 27-92-14-860-051-A
Subtask 27-92-14-420-050-A
Subtask 27-92-14-410-050-A
[Rev.10 from 2021]
2026.04.01 06:03:15 UTC
Installation of the Speedbrake Control Transducer-Unit
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
CAUTION:
WHEN YOU CONNECT THE ELECTRICAL CONNECTORS, MAKE SURE THAT YOU CONNECT EACH PLUG TO THE CORRECT RECEPTACLE (USE THE IDENTIFICATION MARKS).
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 2M (6 FT) - ADJUSTABLE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 822 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-94-00-710-001-A | Operational Test of the Spoiler Elevator Computer 3 (SEC 3) |
| TASK 27-94-00-710-002-A | Operational Test of the Spoiler Elevator Computer 1 (SEC 1) |
| TASK 27-94-00-710-003-A | Operational Test of the Spoiler Elevator Computer 2 (SEC 2) |
| TASK 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
| TASK 29-24-00-864-001-A | Depressurize the Yellow Hydraulic System |
Speedbrake Control Transducer-UnitSubtask 27-92-14-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below access door 822.
(3) Make sure that access door 822 is open.
(4) On battery power center 105VU:
Subtask 27-92-14-865-051-A (1) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below access door 822.
(3) Make sure that access door 822 is open.
(4) On battery power center 105VU:
- Make sure that the protective cover is removed.
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 | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| ** ON A/C ALL | |||
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | B01 |
| 121VU | FLIGHT CONTROLS/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
Subtask 27-92-14-420-050-A
A. Installation of the Speedbrake Control Transducer-Unit
(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 connectors (4), (5), (6) and (7), and from the connectors of the transducer unit (3).
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the connectors (4), (5), (6) and (7) to the transducer unit (3).
(6) Put the transducer unit (3) in position.
(7) Install the washers (2) and the screws (1) and tighten them.
Subtask 27-92-14-865-052-A (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 connectors (4), (5), (6) and (7), and from the connectors of the transducer unit (3).
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the connectors (4), (5), (6) and (7) to the transducer unit (3).
(6) Put the transducer unit (3) in position.
(7) Install the washers (2) and the screws (1) and tighten them.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-92-14-710-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SEC1/NORM/SPLY | 21CE1 | B03 |
| ** ON A/C ALL | |||
| 105VU | FLT CTL/SEC1/STBY SPLY | 22CE | B01 |
| 121VU | FLIGHT CONTROLS/SEC3/SPLY | 21CE3 | Q19 |
| 121VU | FLIGHT CONTROLS/SEC2/SPLY | 21CE2 | Q18 |
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
C. Test
(1) Do the test that follows:
(a) Make sure that the SPEED BRAKE control lever is set to the RET position.
(b) Do a visual check to make sure that the SPEED BRAKE control lever is free to move along its travel.
(c) Push on the SPEED BRAKE control lever and pull it back:
- You can feel a hard point/detent at the 1/2 position.
(d) Continue to pull back the SPEED BRAKE control lever to the FULL position:
- The SPEED BRAKE control lever is at its mechanical stop (No hard point/detent at this position).
(e) Push the SPEED BRAKE control lever forward:
- You can feel a hard point/detent at the 1/2 position again.
(f) Continue to push the SPEED BRAKE control lever forward to the RET position:
- You can feel a hard point/detent at the RET position.
(g) Make sure that you can do the GND SPLRS ARMED preselection when you pull the lever up.
(h) Set the lever back to the RET position.
(2) Operational Test
(a) Do the operational test of the SEC system (Ref. AMM TASK 27-94-00-710-001) (Ref. AMM TASK 27-94-00-710-002) and (Ref. AMM TASK 27-94-00-710-003).
1 Move the SPEED BRAKE control lever over full travel and make sure that no failure indication is shown on the ECAM display unit.
5. Close-up(1) Do the test that follows:
(a) Make sure that the SPEED BRAKE control lever is set to the RET position.
(b) Do a visual check to make sure that the SPEED BRAKE control lever is free to move along its travel.
(c) Push on the SPEED BRAKE control lever and pull it back:
- You can feel a hard point/detent at the 1/2 position.
(d) Continue to pull back the SPEED BRAKE control lever to the FULL position:
- The SPEED BRAKE control lever is at its mechanical stop (No hard point/detent at this position).
(e) Push the SPEED BRAKE control lever forward:
- You can feel a hard point/detent at the 1/2 position again.
(f) Continue to push the SPEED BRAKE control lever forward to the RET position:
- You can feel a hard point/detent at the RET position.
(g) Make sure that you can do the GND SPLRS ARMED preselection when you pull the lever up.
(h) Set the lever back to the RET position.
(2) Operational Test
(a) Do the operational test of the SEC system (Ref. AMM TASK 27-94-00-710-001) (Ref. AMM TASK 27-94-00-710-002) and (Ref. AMM TASK 27-94-00-710-003).
1 Move the SPEED BRAKE control lever over full travel and make sure that no failure indication is shown on the ECAM display unit.
Subtask 27-92-14-410-050-A
A. Close Access
(1) Install the protective cover on battery power center 105VU.
(2) Tighten the two screws.
(3) Close access door 822.
(4) Remove the access platform(s).
(5) Make sure that the work area is clean and clear of tools and other items.
(1) Install the protective cover on battery power center 105VU.
(2) Tighten the two screws.
(3) Close access door 822.
(4) Remove the access platform(s).
(5) Make sure that the work area is clean and clear of tools and other items.