Describe the Smoke configuration of the avionics A320 ventilation system.
-- Used in response to the Avionics Equipment Ventilation Computer (AEVC) sensing smoke in the avionics compartment.
-- The BLOWER and EXTRACTpbs are placed to the OVRD (override) position inaccordance with ECAM procedure.
-- This closes the inlet valve, stops the blower fan, and isolates the cargo under floor and aircraft skin heat exchanger.
-- Conditioned air is provided by the air conditioning system through an air conditioning inlet valve.
-- The extract fan draws the conditioned air through the avionics compartment, and expels it through the small internal flap within the closed extract valve.
Source:
Airbus 320 Part-1 (of 3) Flashcards - Cram.com
Wouldn't feeding the fire with fresh air make it more intense? I also read that the flight deck has a halon portable fire extinguisher, any reason why inaccessible areas of aircraft don't have inbuilt halon extinguishers?