W DOC AIRBUS | MMEL OPS PROC

Avionics Extract Fan (VENT AVNCS SYS FAULT Alert not displayed)

21-26-02AAvionics Extract Fan (VENT AVNCS SYS FAULT Alert not displayed)
Applicable to: -
- Flight preparation/limitations
Time limitation on ground with electrical network supplied:
OAT (°C)
≤ 38
≤ 45
≤ 55
Max time
No limit
 3 h 35 min
- During cockpit preparation
Supply the aircraft electrical network.
Check that the air conditioning correctly operates with both air conditioning packs set to on.
  • EXTRACT pb-swOVRD
Clear the VENT EXTRACT FAULT alert using the CLR pb.
  • AVNCS VENT/EXTC/FAN (123VU AE2) C/BPull
Check that the VENT AVNCS SYS FAULT alert is not displayed on the EWD.
Note:
If the ground horn sounds:
  • EIS/HORN/SPLY (121VU P09) C/BPull
The C/B must be closed again after first engine start
If the ground horn sounds after landing when engines are off, it can be silenced again. In this case, the ADIRS must be set to OFF before leaving the aircraft.
21-26-02AAvionics Extract Fan (VENT AVNCS SYS FAULT Alert not displayed)
Applicable to: -
- Flight preparation/limitations
Time limitation on ground with electrical network supplied:
OAT (°C)
≤ 38
≤ 45
≤ 55
Max time
No limit
 3 h 35 min
- During cockpit preparation
Supply the aircraft electrical network.
Check that the air conditioning correctly operates with both air conditioning packs set to on.
  • EXTRACT pb-swOVRD
Clear the VENT EXTRACT FAULT alert using the CLR pb.
  • AVNCS VENT/EXTC/FAN (123VU AC4) C/BPull
Check that the VENT AVNCS SYS FAULT alert is not displayed on the EWD.
Note:
If the ground horn sounds:
  • EIS/HORN/SPLY (121VU P09) C/BPull
The C/B must be closed again after first engine start
If the ground horn sounds after landing when engines are off, it can be silenced again. In this case, the ADIRS must be set to OFF before leaving the aircraft.
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