Avionics Equipment Ventilation Computer (AEVC)

21-26-10A	Avionics Equipment Ventilation Computer (AEVC)

Applicable to: -

- During cockpit preparation

Supply the aircraft electrical network.

Check that the air conditioning is operating with both air conditioning packs set to on.

BLOWER pb-swOVRD

EXTRACT pb-swOVRD

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.

Note:

In the case of a low pressure in the avionics compartment ventilation ducts, the weather radar image may not be displayed on the ND on ground.

Clear the VENT AVNCS SYS FAULT alert displayed on the EWD using the CLR pb

- In flight

In the case of an air conditioning pack failure:

The cabin altitude may reach about 9700 ft ( 3000 m), and
The CAB PR EXCESS CAB ALT alert may be displayed on the EWD.