W DOC AIRBUS | AMM A320F

System Test of the THS Actuator Electrical Control

TASK 27-41-00-730-001-A
System Test of the THS Actuator Electrical Control

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 FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.
ZONE: 210
1. Reason for the Job
Self 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
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822
 C. Referenced Information
REFERENCE
DESIGNATION
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 29-10-00-863-003-A
Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01
Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-23-00-863-001-A
Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A
Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-863-001-A
Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A
Depressurize the Yellow Hydraulic System
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
3. Job Set-up
Subtask 27-41-00-860-050-A
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
   (2) On the overhead panel 23VU:
  • make sure that the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches are pushed (On these pushbutton switches, the OFF and FAULT legends are off).
   (3) On the overhead panel 24VU:
  • make sure that the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches are pushed (On these pushbutton switches, the OFF and FAULT legends are off).
   (4) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
   (5) On the center pedestal, on the ECAM control panel, push the F/CTL pushbutton switch. (On the lower ECAM display unit, the F/CTL page comes into view).
   (6) Pressurize the Green, the Yellow and the Blue hydraulic systems. (Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-24-00-863-001) (Ref. AMM TASK 29-10-00-863-003)
Subtask 27-41-00-010-060-A
B. Get Access
   (1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
   (2) Open the access door 822.
   (3) On the battery power center 105VU:
  • loosen the two srews and remove the protective cover.
Subtask 27-41-00-865-050-A
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B11
49VUFLIGHT CONTROLS/THS/ACTR/MOT219CE2B09
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/ELAC1/NORM/SPLY15CE1B06
49VUFLIGHT CONTROLS/THS/ACTR/MOT219CE2B04
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/SEC2/SPLY21CE2Q18
121VUFLIGHT CONTROLS/THS ACTR/MOT319CE3Q17
121VUFLIGHT CONTROLS/THS ACTR/MOT119CE1Q16
121VUFLIGHT CONTROLS/ELAC2/NORM/SPLY15CE2R20
4. Procedure
Subtask 27-41-00-730-050-A
A. System Test of the THS Actuator Electrical Control
ACTION
RESULT
1.On the center pedestal:
  • move the pitch-trim control wheel to the 4 DN position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 3.5 and 4.3 deg.
2.On the center pedestal:
  • move the pitch-trim control wheel to the 13.5 UP position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 12.9 and 13.9 deg.
3.On the panel 23VU:
  • release the FLT CTL/ELAC1 and FLT CTL/SEC1 pushbutton switches.
On the panel 23VU:
  • the OFF legends of the ELAC1 and SEC1 pushbutton switches come on.
4.On the panel 24VU:
  • release the FLT CTL/ELAC2 and FLT CTL/SEC2 pushbutton switches.
On the panel 24VU:
  • the OFF legends of the ELAC2 and SEC2 pushbutton switches come on.
5.On the panel 23VU:
  • push the FLT CTL/SEC1 pushbutton switch.
On the panel 23VU:
  • the OFF legend of the SEC1 pushbutton switch goes off.

On the center pedestal:
  • the pitch-trim control wheel goes back to 0 +7 mm or -7 mm (0.0000 +0.2756 in. or -0.2756 in.).

On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
6.On the panel 23VU:
  • release the FLT CTL/SEC1 pushbutton switch.
On the panel 23VU:
  • the OFF legend of the SEC1 pushbutton switch comes on.
7.On the center pedestal:
  • move the pitch-trim control wheel to the 4 DN position.

8.On the panel 23VU:
  • push the FLT CTL/ELAC1 pushbutton switch.
On the panel 23VU:
  • the OFF legend of the ELAC1 pushbutton switch goes off.

On the center pedestal:
  • the pitch-trim control wheel goes back to 0 +7 mm or -7 mm (0.0000 +0.2756 in. or -0.2756 in.).

On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
9.On the panel 23VU:
  • release the FLT CTL/ELAC1 pushbutton switch.
On the panel 23VU:
  • the OFF legend of the ELAC1 pushbutton switch comes on.
10.On the center pedestal:
  • move the pitch-trim control wheel to the 4 DN position.

11.On the panel 24VU:
  • push the FLT CTL/ELAC2 pushbutton switch.
On the panel 24VU:
  • the OFF legend of the ELAC2 pushbutton switch goes off.

On the center pedestal:
  • the pitch-trim control wheel goes back to 0 +7 mm or -7 mm (0.0000 +0.2756 in. or -0.2756 in.).

On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
12.On the panel 24VU:
  • release the FLT CTL/ELAC2 pushbutton switch.
On the panel 24VU:
  • the OFF legend of the ELAC2 pushbutton switch comes on.
13.On the center pedestal:
  • move the pitch-trim control wheel to the 4 DN position.

14.On the panel 24VU:
  • push the FLT CTL/SEC2 pushbutton switch.
On the panel 24VU:
  • the OFF legend of the SEC2 pushbutton switch goes off.

On the center pedestal:
  • the pitch-trim control wheel goes back to 0 +7 mm or -7 mm (0.0000 +0.2756 in. or -0.2756 in.).

On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
15.On the panel 23VU:
  • push the FLT CTL/ELAC1 and FLT CTL/SEC1 pushbutton switches.
On the panel 23VU:
  • the OFF legends of the ELAC1 and SEC1 pushbutton switches go off.
16.On the panel 24VU:
  • push the FLT CTL/ELAC2 pushbutton switch.
On the panel 24VU:
  • the OFF legend of the ELAC2 pushbutton switch goes off.
17.On the center pedestal, on the ECAM control panel:
  • push the HYD pushbutton switch.
On the lower ECAM display unit:
  • the HYD page comes into view.
18.On the panel 40VU:
  • release the HYD/PTU/AUTO pushbutton switch.
On the panel 40VU:
  • the OFF legend of the HYD/PTU/AUTO pushbutton switch comes on.

On the lower ECAM display unit, on the HYD page:
  • the hydraulic pressure of the Green system decreases to 0 PSI.
19.On the center pedestal, on the ECAM control panel:
  • push the F/CTL pushbutton switch.
On the lower ECAM display unit:
  • the F/CTL page comes into view.
20.On the center pedestal:
  • move the pitch trim control wheel to the 4 DN position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 3.5 and 4.3 deg.
21.On the center pedestal:
  • move the pitch-trim control wheel to the 13.5 UP position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 12.9 and 13.9 deg.
22.On the center pedestal:
  • move the pitch-trim control wheel to the 0 position.
On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
23.On the center pedestal, on the ECAM control panel:
  • push the HYD pushbutton switch.
On the lower ECAM display unit:
  • the HYD page comes into view.
24.On the panel 40VU:
  • push the HYD/PTU/AUTO pushbutton switch.
On the panel 40VU:
  • the OFF legend of the HYD/PTU/AUTO pushbutton switch goes off.

On the lower ECAM display unit, on the HYD page:
  • the hydraulic pressure of the Green system increases to approximately 3000 PSI.
25.On the panel 50VU:
  • release the HYD/LEAK MEASUREMENT VALVES/Y pushbutton switch.
On the panel 50VU:
  • the OFF legend of the LEAK MEASUREMENT VALVES/Y pushbutton switch comes on.

On the lower ECAM display unit, on the HYD page:
  • the hydraulic pressure of the Yellow system stays at approximately 3000 PSI but the Yellow indication becomes amber.
26.On the center pedestal, on the ECAM control panel:
  • push the F/CTL pushbutton switch.
On the lower ECAM display unit:
  • the F/CTL page comes into view.
27.On the center pedestal:
  • move the pitch-trim control wheel to the 4 DN position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 3.5 and 4.3 deg.
28.On the center pedestal:
  • move the pitch-trim control wheel to the 13.5 UP position.
On the lower ECAM display unit, on the F/CTL page:
  • on the PITCH TRIM indicator the value shown is included between 12.9 and 13.9 deg.
29.On the center pedestal:
  • move the pitch-trim control wheel to the 0 position.
On the lower ECAM display unit, on the F/CTL page:
  • the PITCH TRIM indicator shows 0 +0.3 deg or -0.3 deg (0.0000 +0.3000 deg or -0.3000 deg).
5. Close-up
Subtask 27-41-00-860-051-A
A. Put the aircraft back to its initial configuration.
   (1) On the panel 50VU:
  • push the HYD/LEAK MEASUREMENT VALVES/Y pushbutton switch (the OFF legend of this pushbutton switch goes off).
   (2) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001).
   (3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
   (4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
Subtask 27-41-00-410-057-A
B. Close Access
   (1) Install the protective cover on the battery power center 105VU.
   (2) Tighten the two screws.
   (3) Close the access door 822.
   (4) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.01 06:54:15 UTC
"Aviabrain" 2025