DOC AIRBUS | AMM A320FInstallation of the Cadensicon
TASK 28-42-16-400-001-A
Installation of the Cadensicon
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 28-42-16-941-056-A ** ON A/C NOT FOR ALL
Subtask 28-42-16-420-052-A ** ON A/C NOT FOR ALL
Subtask 28-42-16-942-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:18:07 UTC
Installation of the Cadensicon
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY BARRIER(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06HAA1) | Coating Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 540AB, 640AB | |
| FOR [19QT1] (CADENSICON-RIB 2-3, L WNG TK INR GROUP A) | |
| 540AB | |
| FOR [19QT2] (CADENSICON-RIB 2-3, R WNG TK INR GROUP A) | |
| 640AB | |
| 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 |
Cadensicon 19QT1(19QT2)Subtask 28-42-16-941-056-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-42-16-860-050-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 applicable access panel 540AB 640AB.
(4) Make sure that the applicable access panel 540AB 640AB is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001).
Subtask 28-42-16-865-052-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 applicable access panel 540AB 640AB.
(4) Make sure that the applicable access panel 540AB 640AB 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 |
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L26 |
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| 121VU | FUEL/FQI/CHAN/2 | 2QT | M27 |
Subtask 28-42-16-420-052-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the component interface 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 28-42-16-560-050-A ** ON A/C NOT FOR ALL (1) Clean the component interface 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. Preparation of the Component Replacement
(1) If installed, unlock the movable clip and remove the transport pin (10) from the cadensicon (1).
Subtask 28-42-16-420-050-C ** ON A/C NOT FOR ALL (1) If installed, unlock the movable clip and remove the transport pin (10) from the cadensicon (1).
NOTE: The transport pin (10) is installed only in cadensicon part number 796-809-6A. Cadensicon part numbers 796-809-5 and 796-809-6 do not have the transport pins installed.
C. Installation of the Cadensicon
(2) Make sure that the cadensicon (1) is correctly bonded to the support bracket (3):
(3) Apply a layer of Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the two ends of the bolts (2).
Subtask 28-42-16-410-050-A ** ON A/C NOT FOR ALL NOTE: You must bond the mating surfaces of the cadensicon (1) (Ref. AMM TASK 20-28-00-912-802).
(1) Install the cadensicon (1) on the support bracket (3) with the bolts (2). (2) Make sure that the cadensicon (1) is correctly bonded to the support bracket (3):
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 cadensicon (1) and the support bracket (3) (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less than 10 milliohms. (3) Apply a layer of Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the two ends of the bolts (2).
CAUTION:
REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES.
INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
CAUTION:
WHEN YOU INSTALL AN ELECTRICAL CABLE, YOU MUST PUSH THE PLASTIC HOUSING IN UNTIL YOU HEAR A CLICK. THIS WILL MAKE SURE THAT THE ELECTRICAL CABLE IS INSTALLED CORRECTLY.
(4) Remove the CAP - BLANKING and connect the electrical connectors (4) to the cadensicon (1). D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the wing access panel (Ref. AMM TASK 57-27-11-400-001):
(a) FOR [19QT1] (CADENSICON-RIB 2-3, L WNG TK INR GROUP A)
install 540AB
(b) FOR [19QT2] (CADENSICON-RIB 2-3, R WNG TK INR GROUP A)
install 640AB.
Subtask 28-42-16-650-054-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 wing access panel (Ref. AMM TASK 57-27-11-400-001):
(a) FOR [19QT1] (CADENSICON-RIB 2-3, L WNG TK INR GROUP A)
install 540AB
(b) FOR [19QT2] (CADENSICON-RIB 2-3, R WNG TK INR GROUP A)
install 640AB.
E. 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 28-42-16-865-051-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).
F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-42-16-740-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/FQI/CHAN/1 | 1QT | A13 |
| 121VU | FUEL/FQI/CHANNEL/1 AND 2 | 8QT | L26 |
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| 121VU | FUEL/FQI/CHAN/2 | 2QT | M27 |
G. Test
(1) Do a STATUS REPORT (BITE) test on the Fuel Quantity Indicating System (Ref. AMM TASK 28-42-00-740-001).
5. Close-up(1) Do a STATUS REPORT (BITE) test on the Fuel Quantity Indicating System (Ref. AMM TASK 28-42-00-740-001).
Subtask 28-42-16-942-050-A ** ON A/C NOT FOR ALL
A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.