DOC AIRBUS | AMM A320FOperational Check of Drain Holes and Hoses for Clogging
TASK 57-29-00-210-002-A
Operational Check of Drain Holes and Hoses for Clogging
Refer to the MPD TASK: 572900-01
OPERATIONAL CHECK OF DRAIN HOLES AND HOSES FOR CLOGGING
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 57-29-00-941-052-A
Subtask 57-29-00-210-052-A ** ON A/C NOT FOR ALL
Subtask 57-29-00-942-052-A
[Rev.10 from 2021]
2026.04.02 06:30:53 UTC
Operational Check of Drain Holes and Hoses for Clogging
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.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Refer to the MPD TASK: 572900-01
OPERATIONAL CHECK OF DRAIN HOLES AND HOSES FOR CLOGGING
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE |
| No specific | AR | GROUND AIR-SUPPLY UNIT(LOW PRESSURE) |
| No specific | AR | PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 520 | LEFT WING FIXED LEADING EDGE |
| 540 | FUEL TANK |
| 620 | RIGHT WING FIXED LEADING EDGE |
| 640 | FUEL TANK |
| REFERENCE | DESIGNATION |
|---|---|
Slat-track Cans and Dry Bay DrainsSubtask 57-29-00-941-052-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 WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(4) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position below the applicable drain-holes in the access panels and the bottom skin of the wing, zones 521(621) and 522(622).
4. Procedure(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 WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(4) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position below the applicable drain-holes in the access panels and the bottom skin of the wing, zones 521(621) and 522(622).
Subtask 57-29-00-210-052-A ** ON A/C NOT FOR ALL
A. Inspection of the Drain Holes and Hoses
(1) Examine the outer wing drain holes and make sure that they are not blocked.
(a) If a hole is blocked, remove the applicable access panel.
(b) Remove all unwanted material from around the hole. Use a PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE to remove the blockage from the hole.
(2) Examine the drain hole(s) in the dry bay(s) and make sure that they are not blocked.
(a) If a hole is blocked, remove all unwanted material from around the hole. Use a 5 mm (0.2 in.) dia. non-metallic probe to remove the blockage from the hole.
(3) To examine the drain holes of the slat-track cans, do the steps that follow:
(a) Put the end of a 9.5 mm (0.374 in.) dia. soft rubber tube into each drain hose.
(b) Use a GROUND AIR-SUPPLY UNIT(LOW PRESSURE) to blow through the tube.
(c) If the hose is not clear, remove all unwanted material.
(4) Find the cause of the blockage.
(5) If you removed an access panel, install it.
Subtask 57-29-00-210-052-B ** ON A/C NOT FOR ALL (1) Examine the outer wing drain holes and make sure that they are not blocked.
(a) If a hole is blocked, remove the applicable access panel.
(b) Remove all unwanted material from around the hole. Use a PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE to remove the blockage from the hole.
(2) Examine the drain hole(s) in the dry bay(s) and make sure that they are not blocked.
(a) If a hole is blocked, remove all unwanted material from around the hole. Use a 5 mm (0.2 in.) dia. non-metallic probe to remove the blockage from the hole.
(3) To examine the drain holes of the slat-track cans, do the steps that follow:
(a) Put the end of a 9.5 mm (0.374 in.) dia. soft rubber tube into each drain hose.
(b) Use a GROUND AIR-SUPPLY UNIT(LOW PRESSURE) to blow through the tube.
(c) If the hose is not clear, remove all unwanted material.
(4) Find the cause of the blockage.
(5) If you removed an access panel, install it.
A. Inspection of the Drain Holes and Hoses
(1) Examine the outer wing drain holes and make sure that they are not blocked.
(a) If a hole is blocked, remove the applicable access panel.
(b) Remove all unwanted material from around the hole. Use a PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE to remove the blockage from the hole.
(2) To examine the drain holes of the slat-track cans, do the steps that follow:
(a) Put the end of a 9.5 mm (0.374 in.) dia. soft rubber tube into each drain hose.
(b) Use a GROUND AIR-SUPPLY UNIT(LOW PRESSURE) to blow through the tube.
(c) If the hose is not clear, remove all unwanted material.
(3) Find the cause of the blockage.
(4) If you removed an access panel, install it.
5. Close-up(1) Examine the outer wing drain holes and make sure that they are not blocked.
(a) If a hole is blocked, remove the applicable access panel.
(b) Remove all unwanted material from around the hole. Use a PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE to remove the blockage from the hole.
(2) To examine the drain holes of the slat-track cans, do the steps that follow:
(a) Put the end of a 9.5 mm (0.374 in.) dia. soft rubber tube into each drain hose.
(b) Use a GROUND AIR-SUPPLY UNIT(LOW PRESSURE) to blow through the tube.
(c) If the hose is not clear, remove all unwanted material.
(3) Find the cause of the blockage.
(4) If you removed an access panel, install it.
Subtask 57-29-00-942-052-A
A. Removal of Equipment
(1) Remove the WARNING NOTICE(S).
(2) Remove the safety barriers.
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the WARNING NOTICE(S).
(2) Remove the safety barriers.
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.