I am neither for nor against an immediate return to normal operations, so I don't want any flaming from the two opposite sides of this debate.
I find it interesting that there has been so much emphasis on the so-called 'test flights' by KLM, BA, etc., but hardly a mention of the flights by G-CALM and the Swiss DA42 quoted a few posts ago.
Both of these well equipped aircraft found significant contamination in the air at various levels from 5000m down.
Why has there been so little mention of these findings?