DOC AIRBUS | AMM A320FInstallation of the Command Sensor Unit (CSU)
TASK 27-51-17-400-001-A
Installation of the Command Sensor Unit (CSU)
Self explanatory
2. Job Set-up Information
A. Consumable Materials
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 27-51-17-860-051-A
Subtask 27-51-17-420-050-A ** ON A/C NOT FOR ALL
Subtask 27-51-17-860-052-A
[Rev.10 from 2021]
2026.04.01 06:58:17 UTC
Installation of the Command Sensor Unit (CSU)
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Self explanatory
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| No specific | corrosion-resistant steel lockwire 0.5 mm (0.020 in.) dia. |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 27-50-00-866-009-A | Retraction of the Flaps on the Ground |
| TASK 27-50-00-866-009-A-01 | Retraction of the Flaps/Slats on the Ground |
| TASK 27-54-00-710-002-A | Operational Test of the Flap and Slat Systems |
| TASK 31-21-00-750-002-A | Procedure to Set the Clock |
| TASK 31-35-22-000-001-A | Removal of the Printer |
| TASK 31-35-22-400-001-A | Installation of the Printer |
Command Sensor Unit (CSU)Subtask 27-51-17-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the flaps and slats are in the fully retracted position (Ref. AMM TASK 27-50-00-866-009).
(2) Make sure that the hydraulic systems are depressurized.
(3) Make sure that the printer is removed (Ref. AMM TASK 31-35-22-000-001).
Subtask 27-51-17-865-051-A (1) Make sure that the flaps and slats are in the fully retracted position (Ref. AMM TASK 27-50-00-866-009).
(2) Make sure that the hydraulic systems are depressurized.
(3) Make sure that the printer is removed (Ref. AMM TASK 31-35-22-000-001).
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/SLT FLP/POS/IND 1 | 1CN | B12 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B07 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 105VU | ELEC/HOT BUS/702PP SPLY | 5PB2 | D02 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 5PB1 | D01 |
| 105VU | ELEC/HOT BUS/702PP SPLY | 12PB2 | E02 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 12PB1 | E01 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P16 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P21 |
| ** ON A/C ALL | |||
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
Subtask 27-51-17-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Command Sensor Unit (CSU)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the control lever (9) on the CSU (5).
(a) Make sure that the mark on the gear of the CSU (5) aligns with the fixed mark. Correctly engage the gear in the control lever (9).
(4) Install the washers (4) and the screws (3), and tighten them.
(5) Safety the screws with lockwire:
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Make sure that all the electrical connections are clean and in the correct condition.
(8) Connect the electrical connectors (7) and (6) to the CSU (5).
(9) Connect the electrical connector (8) to the control lever (9).
(10) Install the control lever (9) on its support.
(11) Install the washers (2) and the screws (1), and tighten them.
Subtask 27-51-17-420-050-B ** 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) Install the control lever (9) on the CSU (5).
(a) Make sure that the mark on the gear of the CSU (5) aligns with the fixed mark. Correctly engage the gear in the control lever (9).
(4) Install the washers (4) and the screws (3), and tighten them.
(5) Safety the screws with lockwire:
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.
(a) Safety the screws (3) with corrosion-resistant steel lockwire 0.5 mm (0.020 in.) dia.. (6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Make sure that all the electrical connections are clean and in the correct condition.
(8) Connect the electrical connectors (7) and (6) to the CSU (5).
(9) Connect the electrical connector (8) to the control lever (9).
(10) Install the control lever (9) on its support.
(11) Install the washers (2) and the screws (1), and tighten them.
A. Installation of the CSU
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the control lever (9) on the CSU (5).
(a) Make sure that the mark on the gear of the CSU (5) aligns with the fixed mark. Correctly engage the gear in the control lever (9).
(4) Install the washers (4) and the screws (3), (10), and tighten them.
(5) Safety the screws with lockwire:
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Make sure that all the electrical connections are clean and in the correct condition.
(8) Connect the electrical connectors (7) and (6) to the CSU (5).
(9) Connect the electrical connector (8) to the control lever (9).
(10) Install the control lever (9) on its support.
(11) Install the washers (2) and the screws (1), and tighten them.
Subtask 27-51-17-210-051-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the control lever (9) on the CSU (5).
(a) Make sure that the mark on the gear of the CSU (5) aligns with the fixed mark. Correctly engage the gear in the control lever (9).
(4) Install the washers (4) and the screws (3), (10), and tighten them.
(5) Safety the screws with lockwire:
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.
(a) Safety the screws (3),(10) with corrosion-resistant steel lockwire 0.5 mm (0.020 in.) dia.. (6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Make sure that all the electrical connections are clean and in the correct condition.
(8) Connect the electrical connectors (7) and (6) to the CSU (5).
(9) Connect the electrical connector (8) to the control lever (9).
(10) Install the control lever (9) on its support.
(11) Install the washers (2) and the screws (1), and tighten them.
B. Visual Inspection of the Electrical Harnesses
(1) Make sure that the electrical harnesses of the CSU do not touch FLAPS control panel 114VU.
Subtask 27-51-17-420-052-A Subtask 27-51-17-865-052-A (1) Make sure that the electrical harnesses of the CSU do not touch FLAPS control panel 114VU.
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-51-17-710-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B12 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B07 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 105VU | ELEC/HOT BUS/702PP SPLY | 5PB2 | D02 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 5PB1 | D01 |
| 105VU | ELEC/HOT BUS/702PP SPLY | 12PB2 | E02 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 12PB1 | E01 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P16 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P21 |
| ** ON A/C ALL | |||
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
E. Do the operational test of the flap and slat system (Ref. AMM TASK 27-54-00-710-002)
(1) If necessary, adjust the clock (Ref. AMM TASK 31-21-00-750-002).
5. Close-up(1) If necessary, adjust the clock (Ref. AMM TASK 31-21-00-750-002).
Subtask 27-51-17-860-052-A
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.
(1) Make sure that the work area is clean and clear of tools and other items.