W DOC AIRBUS | AMM A320F

Detailed Inspection of Nose Gear Door Operating Mechanism

TASK 32-30-00-200-001-A
Detailed Inspection of Nose Gear Door Operating Mechanism

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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
ZONE: 123
ZONE: 124
1. Reason for the Job
Refer to the MPD TASK: 323100-05
DETAILED INSPECTION OF NOSE GEAR DOOR OPERATING MECHANISM
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
123
NOSE GEAR WELL
124
NOSE GEAR WELL
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A
Installation of the Safety Devices on the Landing Gear Doors
TASK 32-22-00-010-001-A
Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-410-001-A
Nose Gear Doors - Ground Doors Closing
F NLG Door Operating Mechanism.
3. Job Set-up
Subtask 32-30-00-941-051-A
A. Safety Precautions
   (1) Put the SAFETY BARRIER(S) in position.
   (2) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (3) On the panel 400VU:
  • make sure that the landing-gear control-lever 6GA is in the DOWN position
  • put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (4) On the panel 110VU:
  • make sure that the GRAVITY GEAR EXTN handle is in the fully counterclockwise position.
  • fold the GRAVITY GEAR EXTN handle into the center console.
Subtask 32-30-00-860-057-A
B. Aircraft Maintenance Configuration
   (1) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
   (2) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is installed on each NLG door (Ref. AMM TASK 32-00-00-481-002).
   (3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in the applicable position, at the zone 123/124, 731, 741.
4. Procedure
Subtask 32-30-00-210-056-A
A. Detailed Inspection of the NLG Door Operating Mechanism
   (1) Examine the bellcrank support brackets and the bellcrank assembly for:
  • impact damage, cracks and corrosion
  • damage to the protective finish.
   (2) Make sure that the support brackets of the bellcrank assembly are correctly installed to the aircraft structure and are in safety.
   (3) Carefully examine the control-rod levers of the bellcrank assembly for correct alignment to the door control-rods.
   (4) Make sure that the eye-ends of the control-rods are correctly installed to the bellcrank levers and are in safety.
   (5) Examine the door actuating cylinder for:
  • impact damage
  • signs of hydraulic leaks
  • pitting and/or scoring of the chromium plating of the piston rod
  • cracks, specially around the area of the connection to the bellcrank assembly and the mounting bracket.
   (6) Make sure that the actuating cylinder is correctly installed to the bellcrank assembly and the mounting-bracket on the aircraft structure.
   (7) Make sure that the actuating cylinder is in safety.
   (8) Examine the actuating-cylinder mounting-bracket for:
  • impact damage
  • cracks
  • damage to the protective finish
  • corrosion.
   (9) Make sure that the actuating-cylinder mounting-bracket is correctly installed to the aircraft structure.
   (10) Make sure that the actuating cylinder is correctly aligned between the bellcrank assembly and the mounting-bracket.
   (11) Make sure that the hydraulic pipes and connections are in the correct condition.
   (12) Examine the door control-rods for:
  • impact damage
  • cracks, dents and corrosion.
   (13) Make sure that the door control-rods are:
  • correctly installed and in safety
  • correctly aligned between the bellcrank levers and the door hinge-points.
   (14) Examine the door hinges for:
  • impact damage
  • cracks, wear and corrosion
  • damage to the protective finish.
   (15) Look for signs of delamination of the door structure, specially around the area of the door hinges.
   (16) Make sure that the bonding leads to the door hinges are in the correct condition.
   (17) Make sure that the proximity sensors, targets and their related mounting-brackets are in the correct condition.
5. Close-up
Subtask 32-30-00-410-051-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
Subtask 32-30-00-942-051-A
B. Removal of Equipment
   (1) Remove the SAFETY BARRIER(S).
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 00:43:41 UTC
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