Removal of the Speedbrake Control Transducer-Unit
TASK 27-92-14-000-001-A
Removal 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 27-92-14-860-050-A
Subtask 27-92-14-020-050-A
[Rev.10 from 2021]
2026.03.31 23:58:31 UTC
Removal 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:
TO PREVENT POSSIBLE CROSS-CONNECTION OF THE ELECTRICAL CONNECTORS, MAKE SURE THAT PLUGS AND RECEPTACLES ARE CLEARLY IDENTIFIED.
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 |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 822 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 |
Subtask 27-92-14-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that the SPEED BRAKE control lever is in the RET position.
(2) 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).
Subtask 27-92-14-010-050-A (1) Make sure that the SPEED BRAKE control lever is in the RET position.
(2) 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).
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below access door 822.
(2) Open access door 822.
(3) On battery power center 105VU:
Subtask 27-92-14-865-050-A (1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below access door 822.
(2) Open access door 822.
(3) On battery power center 105VU:
- Loosen the two screws and remove the protective cover.
C. Open, safety and tag this(these) circuit breaker(s):
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 27-92-14-020-050-A
A. Removal of the Speedbrake Control Transducer-Unit
(1) Remove the screws (1) and the washers (2).
(2) Lift the transducer unit (3).
(3) Disconnect the connectors (4), (5), (6) and (7).
(4) Remove the transducer unit (3).
(5) Put CAP - BLANKING on the connectors (4), (5), (6) and (7), and on the connectors of the transducer unit (3).
(1) Remove the screws (1) and the washers (2).
(2) Lift the transducer unit (3).
(3) Disconnect the connectors (4), (5), (6) and (7).
(4) Remove the transducer unit (3).
(5) Put CAP - BLANKING on the connectors (4), (5), (6) and (7), and on the connectors of the transducer unit (3).
Speedbrake Control Transducer-Unit