DOC AIRBUS | MMEL ITEMS A320FAvionics Extract Fan
| 21-26-02 | Avionics Extract Fan |
|---|
Applicable to: -
NOTE:
During ground operation, correct avionics ventilation should be provided.
21-26-02-A VENT AVNCS SYS FAULT not displayed
| Repair interval | Nbr installed | Nbr required | Placard |
|---|---|---|---|
| C 13.04.2026 | 1 | 0 | Yes |
(o)
1)
2)
3)
4)
May be inoperative provided
that:
1)
The blower fan is operative, and
2)
The EXTRACT pb-sw is set to
OVRD, and
3)
Both air conditioning packs are operative, and
4)
The VENT AVNCS SYS FAULT alert is not displayed.
21-26-02-B Air conditioning inlet valve checked open
| Repair interval | Nbr installed | Nbr required | Placard |
|---|---|---|---|
| C 13.04.2026 | 1 | 0 | Yes |
(o)(m)
1)
2)
3)
4)
May be inoperative provided that:
1)
The blower fan is operative, and
2)
The EXTRACT pb-sw is set to
OVRD, and
3)
Both air conditioning packs are operative, and
4)
The air conditioning inlet valve is checked open before each flight.
21-26-02-C Avionics ventilation system checked
| Repair interval | Nbr installed | Nbr required | Placard |
|---|---|---|---|
| C 13.04.2026 | 1 | 0 | Yes |
(o)(m)
1)
2)
3)
4)
5)
May be inoperative provided that:
1)
The blower fan is operative, and
2)
The EXTRACT pb-sw is set to
OVRD, and
3)
Both air conditioning packs are operative, and
4)
The air conditioning inlet valve is secured
in the open position, and
5)
The avionics ventilation system is checked before each flight.