FLU and CABIN AIR
I am a dangerous goods instructor and with DG training we cover methods for clearing the cabin of toxic fumes from a DG spill.
In most cases to ventilate the cabin the recirculating fans are switched off with the result being 100% new air into the cabin and the old air being expelled through the outflow valves.
My question is : If flights were conducted with the recirc fans off during cruise, how much would this increase fuel burn ?
The theory being with the recirc fans off pax and cabin crew would be less subject to breathing second hand air thus lessonong the spread of flu.
Of most concern is the cabin crew who are subjected to this unhealthy environment so frequently.
Cheers.