W DOC AIRBUS | AMM A320F

Operational Test of the Rudder Servocontrols with Individual Hydraulic System

TASK 27-24-00-710-002-A
Operational Test of the Rudder Servocontrols with Individual Hydraulic System

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.
ZONE: 210
1. Reason for the Job
Refer to the MPD TASK: 272400-01
OPERATIONAL CHECK OF RUDDER SERVOCONTROLS WITH INDIVIDUAL HYDRAULIC SYSTEMS
2. Job Set-up Information
 A. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
 B. 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 29-10-00-864-003-A
Depressurize the Blue Hydraulic System
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
TSM 27-20-00-810-807
 (for corrective action)
3. Job Set-up
Subtask 27-24-00-860-057-A
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Pressurize the aircraft 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).
   (3) On the center pedestal, on panel 110VU, make sure that the RUD TRIM indicator shows 0.
   (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 key (on the lower ECAM display unit, the F/CTL page comes into view).
   (6) On the HYD section of maintenance panel 50VU, make sure that:
  • the HYD/LEAK MEASUREMENT VALVES/B, HYD/LEAK MEASUREMENT VALVES/G, HYD/LEAK MEASUREMENT VALVES/Y pushbutton switches are pushed (the OFF legends of these pushbutton switches are off).
   (7) On the overhead panel, on the F/CTL section of panel 23VU:
  • Make sure that the FAC 1 pushbutton switch is pushed (on this pushbutton switch, the FAULT and OFF legends are off).
   (8) On the overhead panel, on the F/CTL section of panel 24VU:
  • Make sure that the FAC 2 pushbutton switch is pushed (on this pushbutton switch, the FAULT and OFF legends are off).
4. Procedure
Subtask 27-24-00-710-051-A
A. Do this test:
NOTE: During this test, if a result of the actions that follow is not correct, do the trouble shooting procedure TSM 27-20-00-810-807.
ACTION
RESULT
1.On the maintenance panel 50VU:
  • release the HYD/LEAK MEASUREMENT VALVES/G and HYD/LEAK MEASUREMENT VALVES/Y pushbutton switches.
On the maintenance panel 50VU:
  • the OFF legends of the HYD/LEAK MEASUREMENT VALVES/G and HYD/LEAK MEASUREMENT VALVES/Y pushbutton switches come on.
2.On the CAPT or F/O side:
  • slowly push the right rudder pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly to the right mark.

The rudder moves smoothly to the right.
3.Slowly release the right rudder pedal and then push the left rudder pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly from the right mark to the left mark.

The rudder moves smoothly from the right to the left.
4.Slowly release the left rudder pedal.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly to the neutral position.

The rudder moves smoothly to the neutral position.
5.On the maintenance panel 50VU:
  • push the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch.
  • release the HYD/LEAK MEASUREMENT VALVES/B pushbutton switch.
On the maintenance panel 50VU:
  • the OFF legend of the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch goes off,
  • the OFF legend of the HYD/LEAK MEASUREMENT VALVES/B pushbutton switch comes on.
6.On the CAPT or F/O side:
  • slowly push the right rudder pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly to the right mark.

The rudder moves smoothly to the right.
7.Slowly release the right rudder pedal and push the left pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly from the right mark to the left mark.

The rudder moves smoothly from the right to the left.
8.Slowly release the left rudder pedal.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly to the neutral position.

The rudder moves smoothly to the neutral position.
9.On the maintenance panel 50VU:
  • push the HYD/LEAK MEASUREMENT VALVES/Y pushbutton switch.
  • release the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch.
On the maintenance panel 50VU:
  • the OFF legend of the HYD/LEAK MEASUREMENT VALVES/Y pushbutton switch goes off,
  • the OFF legend of the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch comes on.
10.On the CAPT or F/O side:
  • slowly push the right rudder pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly to the right mark.

The rudder moves smoothly to the right.
11.Slowly release the right rudder pedal and then push the left rudder pedal until it touches the mechanical stop.
On the lower ECAM display unit, on the F/CTL page:
  • the pointer of the RUD indicator moves smoothly from the right mark to the left mark.

The rudder moves smoothly from the right to the left.
12.Slowly release the left rudder pedal.
On the lower ECAM display unit, on the F/CTL page :
  • the pointer of the RUD indicator moves smoothly to the neutral position.

The rudder moves smoothly to the neutral position.
5. Close-up
Subtask 27-24-00-860-058-A
A. Put the aircraft back to its initial configuration.
   (1) On the maintenance panel 50VU:
  • push the HYD/LEAK MEASUREMENT VALVES/G and HYD/LEAK MEASUREMENT VALVES/B pushbutton switches (on these pushbutton switches, the OFF legends go off).
   (2) Depressurize the hydraulic systems (Ref. AMM TASK 29-10-00-864-003) (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).
[Rev.10 from 2021] 2026.03.31 23:49:17 UTC
"Aviabrain" 2025