A320 SMOKE QRH - 4th Option?
Anyone to explain what he 4th IF dot in the A320 SMOKE QRH checklist means? I am talking about the "IF smoke disappears within 5 minutes - restore normal ventilation" bit. If this is meant to be separate from the 5 min timer of the ECAM AVIONICS SMOKE, when does the 5 min countdown start and why 5 min?
My theory is that this IF gate is actually part of the 3rd one "IF SMOKE SOURCE CANNOT BE IDENTIFIED ....." and normal ventilation can be re-established if the AVIONICS SMOKE ECAM disappears within 5 mins. In other words, the problem was electric, something was done to stop the fire/smoke within 5 min, so EMER ELEC was not requested by the AVIONICS SMOKE ECAM, therefore ventilation can be restored. Any comments?