DOC AIRBUS | AMM A320FDeactivation of the Blower Fan - FAA Operators Only
TASK 21-26-00-040-023-A
Deactivation of the Blower Fan - FAA Operators Only
1. Reason for the Job
MMEL 21-26-01
BLOWER FAN (FAA ONLY)
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 21-26-00-861-107-A
Subtask 21-26-00-865-135-A
Subtask 21-26-00-942-096-A
[Rev.10 from 2021]
2026.04.02 06:10:57 UTC
Deactivation of the Blower Fan - FAA Operators Only
1. Reason for the Job
MMEL 21-26-01
BLOWER FAN (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| 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 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
Subtask 21-26-00-861-107-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
4. Procedure(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
Subtask 21-26-00-865-135-A
A. Table of the circuit breakers used in this procedure:
Subtask 21-26-00-040-082-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 123VU | AVNCS VENT/BLOWER/FAN | 1HQ | AD10 |
B. Deactivation of the Blower Fan - FAA Operators Only
(1) In the cockpit, on the AIR COND section of overhead panel 30VU:
(a) Make sure that the PACK 1 and PACK 2 pushbutton switches are pushed (the FAULT and OFF legends are off).
(2) In the cockpit, on the VENTILATION section of overhead panel 22VU:
(a) Release the BLOWER pushbutton switch (the OVRD legend comes on).
(3) Open, safety and tag this(these) circuit breaker(s):
(a) Make sure that the VENT AVNCS SYS FAULT and VENT EXTRACT FAULT alert does not come into view.
5. Close-up(1) In the cockpit, on the AIR COND section of overhead panel 30VU:
(a) Make sure that the PACK 1 and PACK 2 pushbutton switches are pushed (the FAULT and OFF legends are off).
(2) In the cockpit, on the VENTILATION section of overhead panel 22VU:
(a) Release the BLOWER pushbutton switch (the OVRD legend comes on).
(3) Open, safety and tag this(these) circuit breaker(s):
- 1HQ.
(a) Make sure that the VENT AVNCS SYS FAULT and VENT EXTRACT FAULT alert does not come into view.
Subtask 21-26-00-942-096-A
A. Safety Precautions
(1) Put a WARNING NOTICE(S) in the cockpit to tell the crew that the blower fan is deactivated.
(2) Make an entry in the logbook.
Subtask 21-26-00-862-108-A (1) Put a WARNING NOTICE(S) in the cockpit to tell the crew that the blower fan is deactivated.
(2) Make an entry in the logbook.
B. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).