DOC AIRBUS | AMM A320FDetailed Visual Inspection of the Inlet Cowl Anti-Ice Inlet and Exit Ducts through the Anti-ice Vent Panel [CFMB]
TASK 71-11-00-220-002-A
Detailed Visual Inspection of the Inlet Cowl Anti-Ice Inlet and Exit Ducts through the Anti-ice Vent Panel
Do this procedure if you find the inlet cowl pressure relief door open.
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 71-11-00-941-064-A ** ON A/C NOT FOR ALL
Subtask 71-11-00-220-053-A ** ON A/C NOT FOR ALL
Subtask 71-11-00-410-061-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:32:15 UTC
Detailed Visual Inspection of the Inlet Cowl Anti-Ice Inlet and Exit Ducts through the Anti-ice Vent Panel
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
1. Reason for the JobDo this procedure if you find the inlet cowl pressure relief door open.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-11-00-000-044-A | Removal of the Anti-Ice Vent Panel |
| TASK 71-11-00-400-045-A | Installation of the Anti-Ice Vent Panel |
| TASK 71-11-00-720-001-A | Functional Check of the Pressure Relief Door on the Inlet Cowl |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
Air Intake CowlSubtask 71-11-00-941-064-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(2) On the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).
(3) On the ENG section of the maintenance panel 50VU:
Subtask 71-11-00-010-063-A ** ON A/C NOT FOR ALL (1) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(2) On the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).
(3) On the ENG section of the maintenance panel 50VU:
- Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
- Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040).
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
(3) Remove the anti-ice vent panel (10) (Ref. AMM TASK 71-11-00-000-044).
4. Procedure(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040).
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
(3) Remove the anti-ice vent panel (10) (Ref. AMM TASK 71-11-00-000-044).
Subtask 71-11-00-220-053-A ** ON A/C NOT FOR ALL
A. Do a detailed visual inspection of the inlet cowl anti-ice inlet and exit ducts using a flashlight and an inspection mirror:
5. Close-up| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Anti-ice inlet duct for: | | |
| A.Dents | Two per linear foot (305 mm) provided depth does not exceed 10 percent of tube O.D. and radius is not less than 2 times the wall thickness. | If the damage is more than the allowable limits, replace the duct |
| B.Holes and cracks | None permitted | If there are dents, holes or cracks, replace the duct |
| C.Loose or missing fasterners | None permitted | If there are loose or missing fasterners, replace the fasteners |
| D.Loose coupling or housing | None permitted | If the coupling or housing is loose, tighten or replace the coupling or housing |
| 2.Anti-ice exit duct, rubber boot and clamp for: | | |
| A.Dents and holes | None permitted | If there are dents or holes, replace the duct or boot |
| B.Loose or missing fasteners | None permitted | If there are loose or missing fasteners, replace the fasteners |
| C.Loose or missing clamp | None permitted | If the clamp is loose or missing, tighten or replace the clamp |
| D.Cracks (rubber boot or clamp) | None permitted | If there are cracks, replace the rubber boot or clamp |
| E.Cracks (nacelle anti-ice exhaust duct) | 2 defects per duct, must not be greater than 3.6 in. (91 mm) and must not extend beyond the outboard edge of the clamp. 30 days with weekly inspections without repair. | If there are cracks refer to:
|
Subtask 71-11-00-410-061-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 anti-ice vent panel (10) (Ref. AMM TASK 71-11-00-400-045).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040).
(4) Do a functional check of the inlet cowl pressure relief door (Ref. AMM TASK 71-11-00-720-001).
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the anti-ice vent panel (10) (Ref. AMM TASK 71-11-00-400-045).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040).
(4) Do a functional check of the inlet cowl pressure relief door (Ref. AMM TASK 71-11-00-720-001).
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).