DOC AIRBUS | AMM A320FInstallation of the Dualcomp
TASK 28-42-46-400-001-A
Installation of the Dualcomp
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 28-42-46-941-052-A ** ON A/C NOT FOR ALL
Subtask 28-42-46-420-051-A ** ON A/C NOT FOR ALL
Subtask 28-42-46-650-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:04:06 UTC
Installation of the Dualcomp
WARNING:
THIS PROCEDURE USES A FUEL SYSTEM ITEM THAT IS IN A CATEGORY KNOWN AS A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL). CDCCL IDENTIFIES AN ITEM THAT CAN BE THE SOURCE OF A POSSIBLE FUEL TANK IGNITION. YOU MUST KEEP ALL CDCCL ITEMS IN THE APPROVED CONFIGURATION. DAMAGE, WEAR OR CHANGES TO A CDCCL ITEM CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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.
FIN: 53QT ** ON A/C NOT FOR ALL
1. Reason for the JobSelf Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06ABA1) | Polysulfide Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 540AB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-11-28-650-003-A | Pressure Refuel with Automatic Control |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| TASK 28-10-00-910-002-A | Access to the Fuel Tanks and the Work Areas |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-650-003-A | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-650-003-A-01 | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 28-42-00-740-001-A | Status Report (BITE) |
| TASK 57-27-11-000-001-A | Removal of the Access Panel |
| TASK 57-27-11-400-001-A | Installation of the Access Panel |
Dualcomp - Location and DetailSubtask 28-42-46-941-052-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-42-46-860-050-A ** ON A/C NOT FOR ALL WARNING:
BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank. (2) Make sure that the SAFETY BARRIER(S) are in position.
B. Aircraft Maintenance Configuration
(1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(2) Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the access platform is below the access panel 540AB.
(4) Make sure that the access panel 540AB is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001).
Subtask 28-42-46-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(2) Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the access platform is below the access panel 540AB.
(4) Make sure that the access panel 540AB is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001).
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/FQI/CHAN/1 | 1QT | A13 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L26 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHAN/2 | 2QT | M27 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L25 |
Subtask 28-42-46-420-051-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 28-42-46-420-050-C ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
B. Installation of the Dualcomp
(2) Put the P-clips (13) and (15) in position on the dualcomp (1).
(3) Install the washers (12) and the bolts (11).
(4) Make sure that the dualcomp (1) is correctly bonded to the support bracket (14):
(5) Apply Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (11) and the washers (12).
(6) Remove the blanking caps from the electrical connectors (22), (23) and (24).
(7) Put the electrical connectors (22), (23) and (24) in position on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (22), (23) and (24)).
(8) Install the washers (19), (20) and (21) and the nuts (16), (17) and (18).
(9) TORQUE the nut (18) to between 48 and 28 lbf.in (0.54 and 0.32 m.daN )
.
(10) TORQUE the nut (17) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN ).
(11) TORQUE the nut (16) to between 14 and 10 lbf.in (0.16 and 0.11 m.daN ).
(12) Remove the blanking caps from the electrical connectors (2), (3) and (4).
(13) Put the electrical connectors (2), (3) and (4) in position on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (2), (3) and (4)).
(14) Install the washers (5), (6) and (10) and the nuts (7), (8) and (9).
(15) TORQUE the nut (9) to between 48 and 28 lbf.in (0.54 and 0.32 m.daN ).
(16) TORQUE the nut (8) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN ).
(17) TORQUE the nut (7) to between 14 and 10 lbf.in (0.16 and 0.11 m.daN ).
Subtask 28-42-46-410-050-A ** ON A/C NOT FOR ALL NOTE: You must bond the mating surfaces of the dualcomp (1) (Ref. AMM TASK 20-28-00-912-802).
(1) Put the dualcomp (1) in position on its support bracket (14). (2) Put the P-clips (13) and (15) in position on the dualcomp (1).
(3) Install the washers (12) and the bolts (11).
(4) Make sure that the dualcomp (1) is correctly bonded to the support bracket (14):
WARNING:
THIS INSTRUCTION IS APPLICABLE TO A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL) ITEM. CAREFULLY OBEY ALL GIVEN INSTRUCTIONS WHEN YOU DO THIS STEP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, A DANGEROUS CONDITION CAN OCCUR THAT CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.
(a) Do a bonding check between the dualcomp (1) and the support bracket (14) (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less then 10 milliohms. (5) Apply Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (11) and the washers (12).
(6) Remove the blanking caps from the electrical connectors (22), (23) and (24).
(7) Put the electrical connectors (22), (23) and (24) in position on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (22), (23) and (24)).
(8) Install the washers (19), (20) and (21) and the nuts (16), (17) and (18).
(9) TORQUE the nut (18) to between 48 and 28 lbf.in (0.54 and 0.32 m.daN )
. (10) TORQUE the nut (17) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )
. (11) TORQUE the nut (16) to between 14 and 10 lbf.in (0.16 and 0.11 m.daN )
. (12) Remove the blanking caps from the electrical connectors (2), (3) and (4).
(13) Put the electrical connectors (2), (3) and (4) in position on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (2), (3) and (4)).
(14) Install the washers (5), (6) and (10) and the nuts (7), (8) and (9).
(15) TORQUE the nut (9) to between 48 and 28 lbf.in (0.54 and 0.32 m.daN )
. (16) TORQUE the nut (8) to between 27 and 23 lbf.in (0.31 and 0.26 m.daN )
. (17) TORQUE the nut (7) to between 14 and 10 lbf.in (0.16 and 0.11 m.daN )
. C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 540AB (Ref. AMM TASK 57-27-11-400-001).
Subtask 28-42-46-865-052-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 540AB (Ref. AMM TASK 57-27-11-400-001).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-42-46-740-050-A ** ON A/C NOT FOR ALL 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/FQI/CHAN/1 | 1QT | A13 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L26 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHAN/2 | 2QT | M27 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L25 |
Subtask 28-42-46-650-051-A ** ON A/C NOT FOR ALL
A. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
Subtask 28-42-46-942-050-A ** ON A/C NOT FOR ALL (1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
B. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.