My impression is that the way this was handled was flawed. Effectively removing him from his full-time ACC job is highly questionable. The issue is more compli

My impression is that the way this was handled was flawed. Effectively removing him from his full-time ACC job is highly questionable. The issue is more complicated. The flight surgeon was concerned over the filters, but the chain-of-command couldn't allow him to fly without the filter. There was genuine concern from the chain of command, acting on the premise it was toxic fumes getting into the pilots air/oxygen supply. That turned out to be flawed as well.