W DOC AIRBUS | AMM A320F

Visual Check of Drain Holes for Clogging

TASK 57-39-00-200-002-A
Visual Check of Drain Holes for Clogging

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.
ZONE: 534
ZONE: 634
1. Reason for the Job
Refer to the MPD TASK: 573900-01
VISUAL CHECK OF DRAIN HOLES FOR CLOGGING
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 4M (13 FT)
No specific
AR
PROBE - NON METALLIC, FLEXIBLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
98D27803500001
1
LOCKING TOOL ZERO POS
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
534
WING TIP
634
WING TIP
534AB, 634AB
 C. Referenced Information
REFERENCE
DESIGNATION
F Wing-Tip Drain Holes ** ON A/C NOT FOR ALL
F Sharklet Drain Holes ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 57-39-00-941-051-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
   (3) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or the slats.
Subtask 57-39-00-010-050-A
B. Get Access
   (1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable wing-tip at zone 534(634).
4. Procedure
Subtask 57-39-00-210-051-F ** ON A/C NOT FOR ALL
A. Visual Check of the Drain Holes for Clogging
   (1) Examine the drain holes in:
  • The forward and aft area of access panel 534AB ( 634AB)
  • The bottom of the wing-tip fence
  • The lower surface of the wing adjacent to the wing-tip glazing panel.
   (2) Make sure that they are not blocked.
   (3) If the hole in access panel 534AB ( 634AB) is blocked, remove it.
   (4) For all the holes, remove all unwanted material from around the holes. Use the PROBE - NON METALLIC, FLEXIBLE to remove the blockage from the holes.
   (5) If you removed access panel 534AB ( 634AB), install it when the blockage is clear.
NOTE: The access panel is installed with the drain holes in the inboard direction.
Subtask 57-39-00-210-051-G ** ON A/C NOT FOR ALL
A. Visual Check of the Drain Holes for Clogging
   (1) Examine the drain holes in the bottom of the sharklet.
   (2) Make sure that they are not blocked.
   (3) If the hole is blocked, remove all unwanted material from around the holes. Use the PROBE - NON METALLIC, FLEXIBLE to remove the blockage from the holes.
5. Close-up
Subtask 57-39-00-410-050-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).
Subtask 57-39-00-942-051-A
B. Removal of Equipment
   (1) Remove the WARNING NOTICE(S).
   (2) Remove the SAFETY BARRIERS.
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:30:56 UTC
"WTRUIB" 2025