W DOC AIRBUS | AMM A320F

Electrical Test of the Aileron Servo Controls

TASK 27-14-00-760-001-A
Electrical Test of the Aileron Servo Controls

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:
  • ON THE THS OR IN THE REAR FUSELAGE
  • ON TOP OF THE WINGS OR PYLONS.
WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
ZONE: 575
ZONE: 675
FIN: 33CE1
FIN: 33CE2
FIN: 33CE3
FIN: 33CE4
1. Reason for the Job
To confirm the cause of an aileron servocontrol fault (flight control computer, aircraft wiring or servocontrol).
In this procedure, you will interchange the wiring between two servocontrols (the one that you think is unserviceable and one that you know is serviceable).
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
2
WARNING NOTICE(S)
99D27103500000
1
SWITCH SERVO CTL AIL
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
575
AFT OUTBD SE OF WING AND TE FIXED STRUCT
675
AFT OUTBD SE OF WING AND TE FIXED STRUCT
575AT, 675AT
FOR [33CE1] (SERVO CTL-L AILERON, INBD G)
FOR [33CE3] (SERVO CTL-L AILERON, OUTBD B)
575AT
FOR [33CE2] (SERVO CTL-R AILERON, INBD G)
FOR [33CE4] (SERVO CTL-R AILERON, OUTBD B)
675AT
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-96-00-710-020-A
Operational Test of the Side Stick Assembly (Activation for the BITE Test)
TASK 27-96-00-740-001-A
BITE Test of the EFCS (Ground Scanning)
TASK 29-10-00-864-001-A
Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A
Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A
Depressurize the Blue Hydraulic System
TASK 57-51-37-000-007-A
Removal of the Access Panel
TASK 57-51-37-400-007-A
Installation of the Access Panel
3. Job Set-up
Subtask 27-14-00-860-066-A
A. Aircraft Maintenance Configuration
   (1) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).
Subtask 27-14-00-865-061-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B11
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B10
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B06
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B05
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
** ON A/C ALL
105VUFLIGHT CONTROLS/ELAC2/STBY SPLY16CE2A02
105VUFLT CTL/ELAC1/STBY SPLY16CE1A01
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/FCDC2/SPLY20CE2Q20
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
121VUFLIGHT CONTROLS/ELAC2/NORM/SPLY15CE2R20
Subtask 27-14-00-941-058-A
C. Safety Precautions
   (1) Put a WARNING NOTICE(S) in position to tell persons not to use these controls:
  • The CAPT and F/O side sticks.
   (2) Put WARNING NOTICES in position to tell persons not to operate the hydraulic systems.
Subtask 27-14-00-010-056-A
D. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the applicable zone:
  • For the fault on the servocontrol 33CE1 or 33CE3, at zone 575.
  • For the fault on the servocontrol 33CE2 or 33CE4, at zone 675.
   (2) Open the applicable trailing edge access panels (Ref. AMM TASK 57-51-37-000-007):
     (a) FOR [33CE1] (SERVO CTL-L AILERON, INBD G), [33CE3] (SERVO CTL-L AILERON, OUTBD B)
     (b) FOR [33CE2] (SERVO CTL-R AILERON, INBD G), [33CE4] (SERVO CTL-R AILERON, OUTBD B)
Subtask 27-14-00-480-052-A
E. Installation of the Tool
   (1) If the fault is on the servocontrol:
     (a) For 33CE1 or 33CE3:
  • Disconnect the electrical connectors 33CE1-A and 33CE3-A.
     (b) For 33CE2 or 33CE4:
  • Disconnect the electrical connectors 33CE2-A and 33CE4-A.
   (2) Connect the 99D27103500000 SWITCH SERVO CTL AIL to the disconnected electrical connectors.
Subtask 27-14-00-865-062-A
F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B11
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B10
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B06
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B05
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
** ON A/C ALL
105VUFLIGHT CONTROLS/ELAC2/STBY SPLY16CE2A02
105VUFLT CTL/ELAC1/STBY SPLY16CE1A01
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/FCDC2/SPLY20CE2Q20
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
121VUFLIGHT CONTROLS/ELAC2/NORM/SPLY15CE2R20
4. Procedure
Subtask 27-14-00-760-050-A
A. Electrical Test of the Aileron Servo Controls
   (1) Do the operational test of the side stick assembly (Activation for the BITE test) (Ref. AMM TASK 27-96-00-710-020).
   (2) Do a BITE Test of the EFCS (Ground Scanning) (Ref. AMM TASK 27-96-00-740-001):
     (a) If the fault is the same, do a check of the aircraft wiring and of the flight control computer (Ref. TSM).
     (b) If the fault is on the other side, replace the defective servocontrol.
5. Close-up
Subtask 27-14-00-865-063-A
A. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B11
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B10
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B06
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B05
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
** ON A/C ALL
105VUFLIGHT CONTROLS/ELAC2/STBY SPLY16CE2A02
105VUFLT CTL/ELAC1/STBY SPLY16CE1A01
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/FCDC2/SPLY20CE2Q20
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
121VUFLIGHT CONTROLS/ELAC2/NORM/SPLY15CE2R20
Subtask 27-14-00-080-052-A
B. Removal of the Tool
   (1) Disconnect the 99D27103500000 SWITCH SERVO CTL AIL.
   (2) Connect the electrical connectors:
     (a) For the servocontrol 33CE1 or 33CE3:
  • 33CE1-A and 33CE3-A.
     (b) For the servocontrol 33CE2 or 33CE4:
  • 33CE2-A and 33CE4-A.
Subtask 27-14-00-865-064-A
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B11
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B10
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B06
49VUFLIGHT CONTROLS/FCDC1/SPLY20CE1B05
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
** ON A/C ALL
105VUFLIGHT CONTROLS/ELAC2/STBY SPLY16CE2A02
105VUFLT CTL/ELAC1/STBY SPLY16CE1A01
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/FCDC2/SPLY20CE2Q20
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
121VUFLIGHT CONTROLS/ELAC2/NORM/SPLY15CE2R20
Subtask 27-14-00-410-056-A
D. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the trailing edge access-panels 575AT or 675AT (Ref. AMM TASK 57-51-37-400-007).
Subtask 27-14-00-942-063-A
E. Put the aircraft back to its initial configuration.
   (1) Remove the WARNING NOTICE(S).
   (2) Remove the access platform(s).
[Rev.10 from 2021] 2026.03.31 23:47:23 UTC
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