DOC AIRBUS | AMM A320FInspection of the Fuel Tank Bonding
TASK 28-00-00-200-001-A-01
Inspection of the Fuel Tank Bonding
Inspection of the Fuel Tank Bonding for A321 Aircraft
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 28-00-00-941-061-B ** ON A/C NOT FOR ALL
Subtask 28-00-00-210-055-B ** ON A/C NOT FOR ALL
Subtask 28-00-00-410-062-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:00:15 UTC
Inspection of the Fuel Tank Bonding
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
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.
Inspection of the Fuel Tank Bonding for A321 Aircraft
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE |
| No specific | 1 | LIGHT SOURCE - SPARK-PROOF |
| No specific | AR | SAFETY BARRIER(S) |
| 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 57-17-11-000-001-A | Removal of Access Cover 147AZ(148AZ) |
| TASK 57-17-11-000-001-B | Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door |
| TASK 57-17-11-400-001-A | Installation of Access Cover 147AZ(148AZ) |
| TASK 57-17-11-400-001-B | Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door |
| TASK 57-27-11-000-001-A | Removal of the Access Panel |
| TASK 57-27-11-000-002-A | Removal of the Access Panel |
| TASK 57-27-11-400-001-A | Installation of the Access Panel |
| TASK 57-27-11-400-002-A | Installation of the Access Panel |
Subtask 28-00-00-941-061-B ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 28-00-00-860-064-B ** 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, when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001). (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
B. Aircraft Maintenance Configuration
(1) Defuel the aircraft (Ref. AMM TASK 28-25-00-650-001).
(2) If necessary, drain the remaining fuel from the applicable fuel tank(s) (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-00-00-010-064-B ** ON A/C NOT FOR ALL (1) Defuel the aircraft (Ref. AMM TASK 28-25-00-650-001).
(2) If necessary, drain the remaining fuel from the applicable fuel tank(s) (Ref. AMM TASK 28-25-00-650-003).
C. Get Access
(1) Get access to the applicable fuel tank or work area (Ref. AMM TASK 28-10-00-910-002):
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-000-001) and (Ref. AMM TASK 57-27-11-000-002).
(b) For the center tank (Ref. AMM TASK 57-17-11-000-001).
(c) Put the ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE in position.
4. Procedure(1) Get access to the applicable fuel tank or work area (Ref. AMM TASK 28-10-00-910-002):
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-000-001) and (Ref. AMM TASK 57-27-11-000-002).
(b) For the center tank (Ref. AMM TASK 57-17-11-000-001).
(c) Put the ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE in position.
Subtask 28-00-00-210-055-B ** ON A/C NOT FOR ALL
A. Inspection of the Fuel Tank Bonding
(1) Do the inspection of the fuel tank bonding:
(a) Use a LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
(d) Make sure that the bonding strap connections are in good condition.
(e) Replace all defective bonding straps (Ref. AMM TASK 20-28-00-912-802) and (Ref. AMM TASK 20-28-00-912-802).
(f) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding strap inspection report sheet to record the condition of each bonding strap.
(a) For the general location of the manhole covers:
(b) For the general location of the fuel quantity indicator harness and the fuel sensor and probes:
(c) For the general location of the water drain valve and the magnetic level indicators:
(d) For the bonding locations in the wing tanks:
Bonding Detail, RIB 11 to RIB 12, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 11 to RIB 12, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 12 to RIB 13, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 12 to RIB 13, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 14 to RIB 15, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 14 to RIB 15, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 15 to RIB 16, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 15 to RIB 16, Left Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 11 to RIB 12, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 11 to RIB 12, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 12 to RIB 13, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 12 to RIB 13, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 14 to RIB 15, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 14 to RIB 15, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 15 to RIB 16, Right Hand ** ON A/C NOT FOR ALL
Bonding Detail, RIB 15 to RIB 16, Right Hand ** ON A/C NOT FOR ALL
(e) For the bonding locations in the center tank:
Subtask 28-00-00-210-055-C ** ON A/C NOT FOR ALL (1) Do the inspection of the fuel tank bonding:
(a) Use a LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
- they are not broken
- there are no broken strands
- the outer braid sheaths are not loose in the end crimps
- there is no corrosion.
NOTE: Bonding straps which only show signs of tarnish should be kept in position until the next scheduled in-tank inspection.
(c) Carefully pull each bonding strap to make sure that the end crimps are correctly attached. (d) Make sure that the bonding strap connections are in good condition.
(e) Replace all defective bonding straps (Ref. AMM TASK 20-28-00-912-802) and (Ref. AMM TASK 20-28-00-912-802).
(f) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding strap inspection report sheet to record the condition of each bonding strap.
(a) For the general location of the manhole covers:
(b) For the general location of the fuel quantity indicator harness and the fuel sensor and probes:
(c) For the general location of the water drain valve and the magnetic level indicators:
(d) For the bonding locations in the wing tanks:
Bonding Detail, RIB 11 to RIB 12, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 11 to RIB 12, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 12 to RIB 13, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 12 to RIB 13, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 14 to RIB 15, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 14 to RIB 15, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 15 to RIB 16, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 15 to RIB 16, Left Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 11 to RIB 12, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 11 to RIB 12, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 12 to RIB 13, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 12 to RIB 13, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 14 to RIB 15, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 14 to RIB 15, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 15 to RIB 16, Right Hand ** ON A/C NOT FOR ALL Bonding Detail, RIB 15 to RIB 16, Right Hand ** ON A/C NOT FOR ALL A. Inspection of the Fuel Tank Bonding
(1) Do the inspection of the fuel tank bonding:
(a) Use a LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
(d) Carefully pull each bonding strap to make sure that the end crimps are correctly attached.
(e) Make sure that the bonding strap connections are in good condition.
(f) Replace all the defective bonding straps (Ref. AMM TASK 20-28-00-912-802) and (Ref. AMM TASK 20-28-00-912-802).
(g) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding-strap inspection report to record the condition of each bonding strap.
(a) For the location of the manhole covers.
(b) For the location of the fuel-quantity indicator harness and the fuel sensor and probes.
(c) For the location of the water drain valve and the magnetic level indicators.
(d) For the bonding locations in the wing tanks.
(e) For the bonding locations in the center tank.
Subtask 28-00-00-210-055-D ** ON A/C NOT FOR ALL (1) Do the inspection of the fuel tank bonding:
(a) Use a LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
- They are not broken
- There are no broken strands
- The outer braid sheaths are not loose in the end crimps
- There is no corrosion.
(d) Carefully pull each bonding strap to make sure that the end crimps are correctly attached.
(e) Make sure that the bonding strap connections are in good condition.
(f) Replace all the defective bonding straps (Ref. AMM TASK 20-28-00-912-802) and (Ref. AMM TASK 20-28-00-912-802).
(g) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding-strap inspection report to record the condition of each bonding strap.
(a) For the location of the manhole covers.
(b) For the location of the fuel-quantity indicator harness and the fuel sensor and probes.
(c) For the location of the water drain valve and the magnetic level indicators.
(d) For the bonding locations in the wing tanks.
(e) For the bonding locations in the center tank.
A. Inspection of the Fuel Tank Bonding
(1) Do the inspection of the fuel tank bonding:
(a) Use the LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
(d) Carefully pull each bonding strap to make sure that the end crimps are correctly attached.
(e) Make sure that the bonding strap connections are in good condition.
(f) Replace all the defective bonding straps (Ref. AMM TASK 20-28-00-912-802).
(g) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding-strap inspection report to record the condition of each bonding strap.
(a) For the location of the manhole covers.
(b) For the location of the fuel-quantity indicator harness and the fuel sensor and probes.
(c) For the location of the water drain valve and the magnetic level indicators.
(d) For the bonding locations in the wing tanks.
(e) For the bonding locations in the center tank.
5. Close-up(1) Do the inspection of the fuel tank bonding:
(a) Use the LIGHT SOURCE - SPARK-PROOF to make sure that all the bonding straps are correctly installed.
(b) Visually examine the bonding straps and make sure that:
- They are not broken
- There are no broken strands
- The outer braid sheaths are not loose in the end crimps
- There is no corrosion.
(d) Carefully pull each bonding strap to make sure that the end crimps are correctly attached.
(e) Make sure that the bonding strap connections are in good condition.
(f) Replace all the defective bonding straps (Ref. AMM TASK 20-28-00-912-802).
(g) Make sure that the bonding location points are in the correct condition (Ref. AMM TASK 20-28-00-912-802).
(2) Use the bonding-strap inspection report to record the condition of each bonding strap.
(a) For the location of the manhole covers.
(b) For the location of the fuel-quantity indicator harness and the fuel sensor and probes.
(c) For the location of the water drain valve and the magnetic level indicators.
(d) For the bonding locations in the wing tanks.
(e) For the bonding locations in the center tank.
Subtask 28-00-00-410-062-B ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panels:
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(b) For the center tank (Ref. AMM TASK 57-17-11-400-001).
Subtask 28-00-00-650-054-B ** ON A/C NOT FOR ALL Subtask 28-00-00-942-056-B ** 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 applicable access panels:
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(b) For the center tank (Ref. AMM TASK 57-17-11-400-001).
C. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.