It's like 'there is never a cop when you need one'. They can't be everywhere, everytime. They took his medical/licence off him, what more can they do.
What more could they do you ask? Why, oh why did they give him back his PPL which enabled him to fly (under the radar???) but in reality operate a commercial business. Also, from evidence presented that he was indeed a confirmed epliletic.
I couldn't imagine the grief that Barry's family are going through.
Yes - BUT they too could have saved Barry's life by reporting his true health to authorities instead of allowing him to kill himself (and the fare paying passenger). It was going to happen sooner or later with Barry's condition.