DOC AIRBUS | AMM A320FReactivation of the Emergency Ram-Air Inlet
TASK 21-55-00-440-001-A
Reactivation of the Emergency Ram-Air Inlet
MMEL 21-55-01A
EMERGENCY RAM AIR INLET
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 21-55-00-861-054-A Subtask 21-55-00-010-051-A
Subtask 21-55-00-440-050-A
Subtask 21-55-00-410-051-A
[Rev.10 from 2021]
2026.04.02 06:11:32 UTC
Reactivation of the Emergency Ram-Air Inlet
FIN: 7HZ
1. Reason for the JobMMEL 21-55-01A
EMERGENCY RAM AIR INLET
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 191BB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 21-55-00-040-001-A | Operational Test of the Emergency Ram-Air Inlet System |
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
Emergency Ram Air-Inlet Actuator - Component LocationSubtask 21-55-00-861-054-A Subtask 21-55-00-010-051-A
B. Get Access
(1) Remove the access panel (Ref. AMM TASK 53-35-13-000-002):
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position below the access of the emergency ram-air inlet actuator.
Subtask 21-55-00-865-055-A (1) Remove the access panel (Ref. AMM TASK 53-35-13-000-002):
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position below the access of the emergency ram-air inlet actuator.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR COND/RAM/AIR/INLET | 1HZ | D10 |
Subtask 21-55-00-440-050-A
A. Reactivation of the Emergency Ram-Air Inlet
(1) Make sure that all the electrical connections are clean and in the correct condition.
(2) Remove the temporary attachment and connect the electrical connector (1).
(3) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-55-00-865-054-A (1) Make sure that all the electrical connections are clean and in the correct condition.
(2) Remove the temporary attachment and connect the electrical connector (1).
(3) Make sure that the work area is clean and clear of tools and other items.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-55-00-710-052-A 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR COND/RAM/AIR/INLET | 1HZ | D10 |
Subtask 21-55-00-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (Ref. AMM TASK 53-35-13-400-002)
(3) Remove the access platform(s).
Subtask 21-55-00-862-054-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (Ref. AMM TASK 53-35-13-400-002)
(3) Remove the access platform(s).