W DOC AIRBUS | AMM A320F

Operational Check of Rubber Flap Drain Valve Holes in Pressure Floor from MLG Bay

TASK 53-39-00-210-001-A
Operational Check of Rubber Flap Drain Valve Holes in Pressure Floor from MLG Bay

ZONE: 140
1. Reason for the Job
Refer to the MPD TASK: 533900-01
OPERATIONAL CHECK OF RUBBER FLAP DRAIN VALVE HOLES IN PRESSURE FLOOR FROM MLG BAY
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific
1
PROBE - NON METALLIC, FLEXIBLE
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
140
CENTER WING
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 32-12-00-010-001-A
Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A
Close the Main Gear Doors after Access
F FWD Drain Holes - Component Location
3. Job Set-up
Subtask 53-39-00-010-050-A
A. Get Access
   (1) Open the main landing-gear doors (Ref. AMM TASK 32-12-00-010-001).
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.
   (2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position under the main landing-gear bay.
4. Procedure
Subtask 53-39-00-210-050-A
A. Inspection Procedure
   (1) Do the operational check of the drain holes of the rubber flap drain-valves in the pressure floor from the main landing-gear bay:
     (a) Make sure that the drain holes in the forward ceiling area of the landing gear bay are not blocked.
     (b) If a drain hole is blocked, you must remove the blockage.
     (c) Carefully push a PROBE - NON METALLIC, FLEXIBLE into each drain hole and make sure that the rubber seal operates correctly.
5. Close-up
Subtask 53-39-00-410-050-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Close the main landing-gear doors (Ref. AMM TASK 32-12-00-410-001).
   (4) Remove the WARNING NOTICE(S).
   (5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 01:55:28 UTC
"Aviabrain" 2025