W DOC AIRBUS | AMM A320F

Detailed Inspection of Rudder Servocontrol Actuating Spring Rods and Rudder Servocontrol Feedback Rod Attachments

TASK 27-21-00-220-004-A
Detailed Inspection of Rudder Servocontrol Actuating Spring Rods and Rudder Servocontrol Feedback Rod Attachments

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: 325
FIN: 1025GM
FIN: 2025GM
FIN: 3025GM
1. Reason for the Job
Refer to the MPD TASK: 272100-11
DETAILED INSPECTION OF RUDDER SERVOCONTROL ACTUATING SPRING RODS AND RUDDER SERVOCONTROL FEEDBACK ROD ATTACHMENTS
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
98D27207547000
1
PIN-RIGGING
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
325
VERTICAL STABILIZER TRAILING EDGE
312AR, 325CR, 325DR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 55-33-13-010-002-A
Opening/Removal of the Trailing Edge Access-Panels of the Vertical Stabilizer
TASK 55-33-13-410-002-A
Closing/Installation of the Trailing Edge Access-Panels of the Vertical Stabilizer
F Location of the Rigging Pin
F Spring rod - Servocontrol feedback rod
3. Job Set-up
Subtask 27-21-00-860-074-A
A. Aircraft Maintenance Configuration
   (1) Put the rudder pedals in the neutral position.
   (2) Make sure that the rudder trim control is set to zero .
   (3) Put WARNING NOTICE(S) in position in the cockpit to tell persons not to operate the flight controls.
Subtask 27-21-00-865-060-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1B04
49VUAUTO FLT/FAC1/26VAC14CC1B03
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1H10
49VUAUTO FLT/FAC1/26VAC14CC1H09
** ON A/C ALL
121VUAUTO FLT/FAC2/28VDC5CC2M19
121VUAUTO FLT/FAC2/26VAC14CC2M18
Subtask 27-21-00-860-075-A
C. Safety Precautions
   (1) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
   (2) Put WARNING NOTICE(S) in position in the cockpit to tell persons not to pressurize the hydraulic systems.
Subtask 27-21-00-010-068-A
D. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the access door 312AR.
   (2) Open the access door 312AR.
Subtask 27-21-00-480-054-A
E. Installation of the Rigging Pin
   (1) Put the 98D27207547000 PIN-RIGGING (1) in the rudder cable quadrant.
F Location of the Rigging Pin
Subtask 27-21-00-010-069-C
F. Get Access
   (1) Put an ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
   (2) Open the access panels 325DR 325CR at the trailing edge of the vertical stabilizer (Ref. AMM TASK 55-33-13-010-002).
4. Procedure
Subtask 27-21-00-220-060-A
A. Inspection of the Rudder Servocontrol Actuating Spring-Rod and Rudder Servocontrol Feedback-Rod Attachments
NOTE: It is not necessary to remove the protective material during the detailed inspection.
   (1) Make sure that the spring rods, related bellcrank (1) and input lever attachments (2) are in the correct condition (no cracks, no damage that you can see (also on the bearings)).
   (2) Make sure that the related bolts and nuts (3) and (4) are correctly tightened and safetied.
   (3) Make sure that the feedback rod attachments (5) and (6) of the servocontrol are in the correct condition (no cracks, no damage that you can see (also on the bearings)).
   (4) Make sure that the related bolts and nuts (7) and (8) are correctly tightened and safetied.
5. Close-up
Subtask 27-21-00-860-076-C
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the access panels 325DR 325CR at the trailing edge of the vertical stabilizer (Ref. AMM TASK 55-33-13-410-002).
Subtask 27-21-00-480-055-A
B. Removal of the Rigging Pin
   (1) Remove the 98D27207547000 PIN-RIGGING (1) from the rudder cable quadrant.
F Location of the Rigging Pin
Subtask 27-21-00-865-061-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
49VUAUTO FLT/FAC1/28VDC5CC1B04
49VUAUTO FLT/FAC1/26VAC14CC1B03
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1H10
49VUAUTO FLT/FAC1/26VAC14CC1H09
** ON A/C ALL
121VUAUTO FLT/FAC2/28VDC5CC2M19
121VUAUTO FLT/FAC2/26VAC14CC2M18
Subtask 27-21-00-410-063-A
D. Put the aircraft back to its initial configuration.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close access door 312AR.
   (3) Remove the access platform(s).
   (4) Remove the warning notices.
[Rev.10 from 2021] 2026.03.31 23:48:05 UTC
"Aviabrain" 2025