it actually seems like the problem of plane hijacking solved itself once the kamikaze intent became known. people wouldn't just sit passively anymore
everything else is politicians making the best of a crisis
everything else is politicians making the best of a crisis
Locked cockpit slows them down long enough for the hundred or two pissed off passengers to get the coffee pots and go to town.
Flight 93 demonstrated you're not gonna hijack a plane the old way anytime soon.
A few (non-US) pilot/copilots have used the door to hijack their own plane and intentionally crash airliners while the other pilot was in the restroom.
I think they now require at least two people to stay in the cockpit at all times to work around the problem the door created.
Not sure if that means an additional crew member, or if they are allowed to have a flight attendant hang out in the cabin while someone takes a whiz.
Fun fact, "hoi" is plural for "the" in Greek. So "the hoi polloi" literally means "the the many."