DOC AIRBUS | AMM A320FDetailed Inspection of Elbow Drain Hose Connection Area Downstream of Blower Fan
TASK 21-26-42-210-002-A
Detailed Inspection of Elbow Drain Hose Connection Area Downstream of Blower Fan
Refer to the MPD TASK: 212600-07
DETAILED INSPECTION OF ELBOW DRAIN HOSE CONNECTION AREA DOWNSTREAM OF BLOWER FAN
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 21-26-42-210-059-A
Subtask 21-26-42-410-055-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:11:05 UTC
Detailed Inspection of Elbow Drain Hose Connection Area Downstream of Blower Fan
ZONE: 128
1. Reason for the JobRefer to the MPD TASK: 212600-07
DETAILED INSPECTION OF ELBOW DRAIN HOSE CONNECTION AREA DOWNSTREAM OF BLOWER FAN
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 128 | REAR AVIONIC COMPARTMENT |
| 824 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 8 | O-RING | AIPC 21-26-01-08-030 |
| 8 | O-RING | AIPC 21-26-81-08-050 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 52-41-00-410-002-A | Close the Avionics Compartment Doors after Access |
Drain Hole/Hose and Syphon and Filter AssemblyCAUTION:
USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-42-861-055-A Subtask 21-26-42-941-054-A B. Safety Precautions
(1) On the AIR COND panel 30VU:
(a) Make sure that the APU BLEED, all ENG BLEED and the PACK 1(2) pushbutton switches are released.
(b) Put a WARNING NOTICE(S) in position to tell persons not to operate these pushbutton switches.
(2) On the HP and LP ground connectors, put a warning notice in position to tell persons not to supply the ground air sources.
Subtask 21-26-42-865-055-A (1) On the AIR COND panel 30VU:
(a) Make sure that the APU BLEED, all ENG BLEED and the PACK 1(2) pushbutton switches are released.
(b) Put a WARNING NOTICE(S) in position to tell persons not to operate these pushbutton switches.
(2) On the HP and LP ground connectors, put a warning notice in position to tell persons not to supply the ground air sources.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 21-26-42-010-055-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR COND/AVNCS VENT/CTL | 6HQ | D06 |
| 49VU | AIR COND/AVNCS VENT/CTL | 5HQ | D05 |
| 122VU | AIR COND/AVNCS/VENT/MONG | 3HQ | Y17 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | AVNCS VENT/EXTC/FAN | 2HQ | AE02 |
| ** ON A/C ALL | |||
| 123VU | AVNCS VENT/BLOWER/FAN | 1HQ | AD10 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | AVNCS VENT/EXTC/FAN | 2HQ | AC04 |
D. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824.
(2) Open the access door 824.
Subtask 21-26-42-010-056-B (1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824.
(2) Open the access door 824.
E. Removal of the Elbow
(1) Remove the clamps (2) from the flexible sleeve (1).
(4) Remove the elbow (4) and discard the O-ring (8).
4. Procedure(1) Remove the clamps (2) from the flexible sleeve (1).
NOTE: Do not discard the clamps (2). You must keep and use them during the installation procedure.
(2) Remove the clamp (7) from the blower fan (9). NOTE: Do not discard the clamp (7). You must keep and use it during the installation procedure.
(3) Hold the elbow (4) and remove the clamp (3). (4) Remove the elbow (4) and discard the O-ring (8).
Subtask 21-26-42-210-059-A
A. Verification of the Drain Holes/Hose
(1) Remove the clamp (6).
(2) Examine the drain hole/hose (5) area. Make sure that it is not clogged.
(3) Install the clamp (6) and tighten it.
5. Close-up(1) Remove the clamp (6).
(2) Examine the drain hole/hose (5) area. Make sure that it is not clogged.
(3) Install the clamp (6) and tighten it.
Subtask 21-26-42-410-055-B ** ON A/C NOT FOR ALL
A. Installation of the Elbow
(1) Install a new AIPC 21-26-01-08-030 O-RING (8) in the groove of the blower fan (9).
(2) Put the elbow (4) in position.
(3) Install the clamp (3). Do not fully tighten it at this time.
(4) Install the clamps (2) on the flexible sleeve (1). Tighten them.
(5) Install the clamp (7) and torque it to the value given on the clamp.
Subtask 21-26-42-410-055-D ** ON A/C NOT FOR ALL (1) Install a new AIPC 21-26-01-08-030 O-RING (8) in the groove of the blower fan (9).
(2) Put the elbow (4) in position.
(3) Install the clamp (3). Do not fully tighten it at this time.
(4) Install the clamps (2) on the flexible sleeve (1). Tighten them.
(5) Install the clamp (7) and torque it to the value given on the clamp.
NOTE: You must use the clamps (2) and (7) that you kept during the removal procedure.
(6) Tighten the clamp (3). A. Installation of the Elbow
(1) Install a new AIPC 21-26-81-08-050 O-RING (8) in the groove of the blower fan (9).
(2) Put the elbow (4) in position.
(3) Install the clamp (3). Do not fully tighten it at this time.
(4) Install the clamps (2) on the flexible sleeve (1). Tighten them.
(5) Install the clamp (7) and torque it to the value given on the clamp.
Subtask 21-26-42-410-054-A (1) Install a new AIPC 21-26-81-08-050 O-RING (8) in the groove of the blower fan (9).
(2) Put the elbow (4) in position.
(3) Install the clamp (3). Do not fully tighten it at this time.
(4) Install the clamps (2) on the flexible sleeve (1). Tighten them.
(5) Install the clamp (7) and torque it to the value given on the clamp.
NOTE: You must use the clamps (2) and (7) that you kept during the removal procedure.
(6) Tighten the clamp (3). B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).
Subtask 21-26-42-865-056-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-26-42-862-055-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR COND/AVNCS VENT/CTL | 6HQ | D06 |
| 49VU | AIR COND/AVNCS VENT/CTL | 5HQ | D05 |
| 122VU | AIR COND/AVNCS/VENT/MONG | 3HQ | Y17 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | AVNCS VENT/EXTC/FAN | 2HQ | AE02 |
| ** ON A/C ALL | |||
| 123VU | AVNCS VENT/BLOWER/FAN | 1HQ | AD10 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | AVNCS VENT/EXTC/FAN | 2HQ | AC04 |