DOC AIRBUS | AMM A320FDetailed Inspection of the Wing Loop (Belly Fairing) Overheat Sensing Elements.
TASK 36-22-18-200-802-A
Detailed Inspection of the Wing Loop (Belly Fairing) Overheat Sensing Elements.
Self explanatory
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 36-22-18-860-056-A ** ON A/C NOT FOR ALL
Subtask 36-22-18-220-050-A ** ON A/C NOT FOR ALL
Subtask 36-22-18-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:17:32 UTC
Detailed Inspection of the Wing Loop (Belly Fairing) Overheat Sensing Elements.
WARNING:
DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
COOL TO PREVENT BURNS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147AB, 147EB, 147FB, 151BW, 151CW, 191BB, 191EB, 191JB, 192EB, 192FB, 192KB, 196AB, 197BB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 25-55-11-000-001-A | Removal of the Aft Cargo-Compartment Partition at FR47 |
| TASK 25-55-11-400-001-A | Installation of the Aft Cargo-Compartment Partition at FR47 |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
Location and Installation of the Sensing ElementSubtask 36-22-18-860-056-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Put the WARNING NOTICE(S) in position:
Subtask 36-22-18-865-059-A ** ON A/C NOT FOR ALL (1) Put the WARNING NOTICE(S) in position:
- In the cockpit on the engine control panel 115VU to tell persons not to start the engine(s).
- In the cockpit on the AIR COND overhead control panel 30VU to tell persons not to push the APU BLEED pushbutton switch.
- On the HP ground connector to tell persons not to pressurize the pneumatic system.
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 36-22-18-010-054-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position.
(2) Get access to the overheat sensing elements between FR35 and FR36:
(a) Remove the access panels 191BB and 191EB.
(3) Get access to the overheat sensing elements between FR36 and FR42 LH:
(a) Remove the access panel 191JB.
(4) Get access to the overheat sensing elements between FR34 and FR42 RH:
(a) Remove the access panels 192EB, 192FB, 192KB and 196AB.
(5) Get access to the overheat sensing elements between FR42 and FR50:
(a) Remove the access panels 147AB, 147EB, 147FB and 197BB.
(6) Get access to the overheat sensing elements between FR46 and FR49 from the AFT cargo compartment:
(a) Open the AFT cargo compartment door (Ref. AMM TASK 52-30-00-860-001).
(b) Remove the applicable access panels for the overheat sensing elements:
1 Between the FR46 and FR47
4. Procedure(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position.
(2) Get access to the overheat sensing elements between FR35 and FR36:
(a) Remove the access panels 191BB and 191EB.
(3) Get access to the overheat sensing elements between FR36 and FR42 LH:
(a) Remove the access panel 191JB.
(4) Get access to the overheat sensing elements between FR34 and FR42 RH:
(a) Remove the access panels 192EB, 192FB, 192KB and 196AB.
(5) Get access to the overheat sensing elements between FR42 and FR50:
(a) Remove the access panels 147AB, 147EB, 147FB and 197BB.
(6) Get access to the overheat sensing elements between FR46 and FR49 from the AFT cargo compartment:
(a) Open the AFT cargo compartment door (Ref. AMM TASK 52-30-00-860-001).
(b) Remove the applicable access panels for the overheat sensing elements:
1 Between the FR46 and FR47
- Remove the partition panel 151BW (Ref. AMM TASK 25-55-11-000-001)
- Remove the access panel 151CW.
Subtask 36-22-18-220-050-A ** ON A/C NOT FOR ALL
A. Inspection of the Overheat Sensing Elements
(1) Make sure that the clearance between the sensing elements and the duct is approximately 12.7 mm (0.5000 in.) minimum, measured over the full length of the sensing element.
(2) Do an inspection of the elements to make sure that they are installed outside of the insulation.
(3) Make sure that the clearance between the elements and the duct insulation is the same as at the mounting brackets.
(4) Make sure that the sensing elements are installed to the permitted tolerance.
(5) Make sure that each clamp has a silicon rubber grommet.
(6) Make sure that each mounting bracket that is installed directly to the duct has a spacer.
(7) For the overheat sensing elements 33HF/60HF between the FR39 and FR40:
(9) Make sure that each mounting and clamp is not damaged and has no corrosion.
(10) Make sure that the bonding straps are correctly installed (Ref. AMM TASK 20-28-00-912-802).
(11) Make sure that the lockwires are correctly installed on the connection of the sensing elements.
(12) Make sure that the duct insulation is not damaged and correctly installed.
(13) Make sure that the sensing elements have not cracks, nicks, shaprs, bonds chafing or corrosion.
5. Close-up(1) Make sure that the clearance between the sensing elements and the duct is approximately 12.7 mm (0.5000 in.) minimum, measured over the full length of the sensing element.
(2) Do an inspection of the elements to make sure that they are installed outside of the insulation.
(3) Make sure that the clearance between the elements and the duct insulation is the same as at the mounting brackets.
(4) Make sure that the sensing elements are installed to the permitted tolerance.
(5) Make sure that each clamp has a silicon rubber grommet.
(6) Make sure that each mounting bracket that is installed directly to the duct has a spacer.
(7) For the overheat sensing elements 33HF/60HF between the FR39 and FR40:
- Make sure that the material of the spacer is teflon.
- If it is an aluminum spacer, install a teflon spacer.
(9) Make sure that each mounting and clamp is not damaged and has no corrosion.
(10) Make sure that the bonding straps are correctly installed (Ref. AMM TASK 20-28-00-912-802).
(11) Make sure that the lockwires are correctly installed on the connection of the sensing elements.
(12) Make sure that the duct insulation is not damaged and correctly installed.
(13) Make sure that the sensing elements have not cracks, nicks, shaprs, bonds chafing or corrosion.
Subtask 36-22-18-410-053-A ** 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 access panels as necessary:
(a) For the overheat sensing elements between FR35 and FR36:
(b) For the overheat sensing elements between FR36 and FR42 LH:
(d) For the overheat sensing elements between FR42 and FR50:
(3) For the overheat sensing elements between the FR46 and FR49:
(a) Install the partition panel:
1 Between the FR46 and FR47:
Subtask 36-22-18-865-060-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 panels as necessary:
(a) For the overheat sensing elements between FR35 and FR36:
(b) For the overheat sensing elements between FR36 and FR42 LH:
- Install the access panel 191JB.
(d) For the overheat sensing elements between FR42 and FR50:
(3) For the overheat sensing elements between the FR46 and FR49:
(a) Install the partition panel:
1 Between the FR46 and FR47:
- Install the partition panel 151BW (Ref. AMM TASK 25-55-11-400-001).
- Install the access panel 151CW.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 36-22-18-860-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
C. Aircraft Maintenance Configuration
(1) Put the aircraft back to its initial configuration.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(1) Put the aircraft back to its initial configuration.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).