If you are going to crash an aircraft, you're going to do it.
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This is just a Public relations exercise, pure and simple. It solves nothing.
Thank you. Exactly.
When you think about it (and hopefully most of us haven't, up to now), if an airline pilot wants to crash the aircraft, they will find a way. Doesn't matter if Tiffany the F/A or Kev the ASO is in the jump seat. Doesn't matter if it's a Boeing or an Airbus. Doesn't even matter if the other pilot is in their seat, it would simply be a matter of picking the right time in the right phase of flight.
So whatever action they take, it won't achieve anything beyond convincing some people that Something Is Being Done. And adding even more pointless frustrations and irritations to the business of operating aircraft.